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Improvements to Troubleshooting
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---
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title: Common issues
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description: This page is for when you encounter a problem with a source or the app.
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description: Facing issues with a source or the app? Here's how to tackle common challenges.
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---
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# Common issues
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This page is for when you encounter a problem with a source or the app.
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Facing issues with a source or the app?
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Here's how to tackle common challenges.
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## Basic issues
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### Cannot Access SD Card
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The `Cannot Access SD Card` error can sometimes be fixed by changing the location of your downloads to somewhere else and back to the SD card, then restarting the app.
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Having a file or folder name that is too long can also cause this issue.
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Android's file manager does not support filenames longer than 255 characters.
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If you know the file or folder name that is the culprit, you can connect your SD card to your computer and shorten it.
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Otherwise, delete the Tachiyomi downloads folder off of the SD Card.
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### `Cannot Access SD Card`
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* Temporarily switch download location from SD card, then revert and restart the app.
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* Long filenames trigger this. Android file manager doesn't support **>255** characters.
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* If known, shorten the file/folder name via computer when SD card is connected.
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* Else, delete **Tachiyomi** downloads folder on SD card.
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### Storage issues with Android 11+
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See [this](/docs/faq/application/android-11+) section of the FAQ to learn how Scoped Storage affects Tachiyomi in Android 11+ and how to fix it.
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See [this](/docs/faq/application/android-11+) section of the FAQ to learn how Scoped Storage affects **Tachiyomi** in **Android 11+** and how to fix it.
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### Slow loading
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If any sources are slow, it is likely due to the site being slow, your internet being slow, or a rate limit applied to the source to reduce the load or IP bans.
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Sources being slow could stem from site slowness, your internet, or source-imposed rate limits/IP bans.
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### Reading is laggy
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This is usually due to the images in the chapters being too long or large for the reader to handle.
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If you turn have **32-bit color** on, try turning it off under **More -> Settings -> Reader**.
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This helps sometimes to free up some RAM being used.
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To eliminate this issue, find a different source that cuts the chapter into more pieces or downscales the images.
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* Caused by oversized images in chapters.
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* For **32-bit color** users, try disabling in **More -> Settings -> Reader**.
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* Free up RAM.
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* Use sources with smaller images.
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### App not installed
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Refer to this section.
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Refer to "[Unable to install the app or extensions](/docs/guides/troubleshooting/#app-or-extension-installation-issues)" section.
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## Advanced errors
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### Java.lang Exception: Failed to bypass Cloudflare
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`Java.lang.Exception: Failed to bypass Cloudflare` means that the source you selected has Cloudflare protection on, refer to the Cloudflare guide to fix it.
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If the solutions provided do not fix the issue, the source has likely raised the Cloudflare protection level high enough that Tachiyomi is not able to access the site.
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### Unable to resolve host / Connection failed / Failed to connect to / timeout / connection reset
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Errors like `Unable to resolve host`, `Connection failed`, `Failed to connect to`, `timeout`, `connection reset` mean that something is preventing you from connecting to the source.
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### `Java.lang Exception: Failed to bypass Cloudflare`
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This error indicates the selected source is protected by **Cloudflare**.
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Possible reasons include:
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Consult the [Cloudflare guide](/docs/guides/troubleshooting/#cloudflare) for solutions.
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If issues persist, the source might have high **Cloudflare** protection.
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* Your internet connection is not good enough to connect.
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* The app does not have access to the internet.
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### `Unable to resolve host` / `Connection failed` / `Failed to connect to` / `timeout` / `connection reset`
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These errors indicate connection issues. Possible causes include:
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* Weak internet connection.
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* App lacks internet access.
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* Your ISP has blocked the site.
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* The site is down.
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Try the following solutions to fix this issue:
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Try these solutions:
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* Enable **More -> Settings -> Advanced -> DNS over HTTPS**.
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* Use a different internet connection (switch to Wi-Fi, a different Wi-Fi network, mobile data or a VPN).
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* Reboot your router.
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* Change network (Wi-Fi, mobile data, VPN).
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* Reboot router.
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### java.security.cert.CertPathValidatorException / Chain validation failed
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`java.security.cert.CertPathValidatorException` or `Chain validation failed` means there is a problem with validating source's sertificate.
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### `java.security.cert.CertPathValidatorException` / `Chain validation failed`
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Validation issue with source's certificate.
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* Check if the site's certificate has expired.
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Use an online service for checking SSL certificates.
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If the certificate has expired, wait while the site owner to renew it.
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* Ensure that you have the right date and time set on your phone.
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* Try **More -> Settings -> Advanced** then try **Clear cache** and **Clear cookies**.
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* Try using a different internet connection (switch to Wi-Fi, a different Wi-Fi network, mobile data or a VPN).
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* Try restarting the device.
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Try these solutions:
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### Attempt to invoke virtual method 'com.hippo.unifile...'
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The `Attempt to invoke virtual method' com.hippo.unifile...` error can be caused by various reasons, but they all have to do with storage.
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* Check expired certificate, use SSL checker.
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* Set correct device date and time.
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* In **More -> Settings -> Advanced**, try **Clear cache** and **Clear cookies**.
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* Change network (Wi-Fi, mobile data, VPN).
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* Reboot device.
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* Most commonly, it is caused by full storage.
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Check to see if your device or SD Card is full.
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* Check if **Tachiyomi** has access to the SD card.
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You can enable it in Android settings for app permissions.
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* If you're downloading and this error pops up, that means the app might not be able to access the folder you're trying to download to.
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This may be because the folder is corrupted or does not exist.
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Use a file manager to check that the folder(s) exist and every folder in the sequence is available and accessible.
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* The drive you're writing to is corrupted.
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Check using a file manager to see if it is accessible.
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### `Attempt to invoke virtual method 'com.hippo.unifile...'`
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Storage-related error causes:
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* Storage full, check device/SD Card.
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* Grant **Tachiyomi** SD card access in Android settings.
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* Download folder access issues, validate paths.
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* Corrupted or inaccessible writing drive, verify using a file manager.
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## HTTP errors
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Encountering HTTP errors? Here's what they mean and how to address them.
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### HTTP Error: 403
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Possible reasons for `HTTP error 403`:
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* The source you selected has Cloudflare protection on, refer to the Cloudflare guide to fix it.
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* The source is down, removed the series, or banned your IP.
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> Open WebView to check if this is the case.
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### `HTTP Error: 403` - Forbidden
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Possible reasons for this error:
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* The selected source has Cloudflare protection. Check the [Cloudflare guide](/docs/guides/troubleshooting/#cloudflare) for solutions.
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* The source might be down, removed the series, or banned your IP.
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> Open WebView to confirm.
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### HTTP Error: 404
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`HTTP error 404` probably means that the source is down or removed the series.
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Open WevView to check if this is the case.
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Migrate to a different source for this series if you'd like.
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### `HTTP Error: 404` - Not Found
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This error likely indicates a down source or removed series.
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* Use **WebView** to verify.
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> Consider switching to a different source for the series.
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### HTTP Error: 429 - Too Many Requests
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`HTTP error 429` or `Too Many Requests` means that the source banned your IP address (in most cases, it's temporary) because you could be downloading or reading too fast
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We suggest [reporting](https://github.com/tachiyomiorg/tachiyomi-extensions/issues/new/choose) the issue so that a rate limit can be added to prevent IP bans in the future.
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### `HTTP Error: 429` - Too Many Requests
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This error suggests the source temporarily banned your IP due to fast downloads/reads.
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### HTTP Error: 5xx
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`HTTP error 5xx` like `500`, `502`, and others are server-side errors, and the source you are trying to access has problems on their side.
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Open the source in WebView and check if the site is down.
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[Report the issue](https://github.com/tachiyomiorg/tachiyomi-extensions/issues/new/choose) to add rate limits and prevent future IP bans.
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### HTTP Error: 1006
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`HTTP error 1006` means that the source has banned your IP address (in most cases, it's temporary).
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### `HTTP Error: 5xx`
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Errors like `500`, `502`, etc., indicate server-side issues on the source's end.
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### HTTP Error: 1020
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`HTTP error 1020` means that you have violated a firewall rule the site owner has put up.
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This usually means that the site owner has raised the Cloudflare protection level or that the site owner is blocking IPs outside their country.
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[Check the source in WebView](/docs/guides/troubleshooting/#accessing-websites-via-webview) to confirm if it's down.
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### `HTTP Error: 1006`
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This error means a temporary IP ban by the source.
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### `HTTP Error: 1020`
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This error points to violating a firewall rule set by the site owner.
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The owner might raise Cloudflare protection or block IPs from outside their country.
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::: warning
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If error-specific instructions did not help or your error is not on the list, go through **Diagnosis**.
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For unlisted errors or if instructions don't help, refer to [Diagnosis](/docs/guides/troubleshooting/diagnosis).
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:::
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---
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title: Diagnosis
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description: This page is for when you encounter a problem with a source or the app.
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description: Facing issues with a source or the app? Follow these steps to troubleshoot and find solutions.
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---
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# Diagnosis
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This page is for when you encounter a problem with a source or the app.
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Facing issues with a source or the app?
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Follow these steps to troubleshoot and find solutions.
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## Main diagnosis
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## Primary diagnosis
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### Update Your Extensions
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- Go to **Browse -> Extensions**, ensure no extensions have an **Update** button.
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### Update Your App
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- Navigate to **More -> About** and tap **Check for updates**.
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### Manual Series Refresh
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- Drag down to manually refresh problematic series.
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### Test Other Series
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- Try different series from the same source.
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### Update WebView
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- Ensure your WebView is up to date.
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### Use Public WebView
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- Attempt opening series in public WebView.
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> Wait for CAPTCHA or Cloudflare protection if needed.
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### Change Connection
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- Switch networks (Wi-Fi, mobile data, VPN) and confirm IP change.
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### Ask Others
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- Get others to replicate the error.
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### Source Status
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- Verify source's status in a browser.
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### Retry Button
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- Look for retry button on series page.
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### Advanced Settings
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- Go to **More -> Settings -> Advanced** and try any of the below:
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1. **Update Extensions**: Check **Browse -> Extensions** for updates, no pending updates should be present.
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1. **Update App**: Go to **More -> About** and tap **Check for updates**.
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1. **Manual Series Refresh**: Drag down to manually refresh problematic series.
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1. **Test Other Series**: Try different series from the same source.
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1. **Update WebView**: Ensure your WebView is current.
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1. **Public WebView**: Attempt opening series in public WebView. Wait for CAPTCHA or Cloudflare protection if needed.
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1. **Change Connection**: Switch networks (Wi-Fi, mobile data, VPN) and confirm IP change.
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1. **Collaborative Check**: Get others to replicate the error.
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1. **Source Status**: Verify the source's status in a browser.
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1. **Retry Button**: Look for a retry button on the series page.
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1. **Advanced Settings**: Under **More -> Settings -> Advanced**, try these options:
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- Clear Cache
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- Clear Cookies
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- Clear Database
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- DNS over HTTPS
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1. **Download Issues**: Delete the queue and retry downloads.
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1. **Restart Tachiyomi**: Force close and reopen the app.
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### Download Issues
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- Delete queue, retry downloads.
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### Restart Tachiyomi
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- Force close and reopen app.
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::: tip
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An extension update may fix your issue.
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Wait or check for an extension update if you have not already.
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> There are no ETAs for updates.
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:::
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If any of these solutions help, go to [it only happens to me](#it-only-happens-to-me).
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If it is not just you, go to [everyone is having this problem](https://tachiyomi.org/help/guides/troubleshooting/#everyone-is-having-this-problem).
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If any of these solutions help, go to [Personalized Issue](#personalized-issue).
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If it is not just you, go to [Widespread Issue](#widespread-issue).
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If none of these solutions help, try asking in our [Discord server](https://discord.gg/tachiyomi).
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Check **#status-updates** first to see if your issue is known.
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Check [#status-updates](https://discord.com/channels/349436576037732353/738862409284059239) first to see if your issue is known.
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State your app version and the source, series, and chapter with the problem if it is not listed.
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## It only happens to me
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You may be getting a [Cloudflare](/docs/guides/troubleshooting/#cloudflare) protection, may have been IP-banned, or encountered some other counter-measure that website owners deploy against programs like Tachiyomi.
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If that is the case, there is probably nothing that Tachiyomi can do to solve it.
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Some of them (like [Cloudflare](/docs/guides/troubleshooting/#cloudflare)) have to be manually solved, and some are temporary (IP bans).
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**Workarounds that can the lower chance of an issue happening again:**
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- Don't use downloads with the source.
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- Have less series in your library from the source.
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::: warning
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The above are imprecise and fuzzy rules because each site has its non-public limits and triggers.
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::: tip An extension update may fix your issue
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Wait or check for an extension update if you have not already.
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There are no ETAs for updates.
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:::
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## Everyone is having this problem
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If the site is reachable and fully functional, there may be an issue with the extension or app.
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## Personalized Issue
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If you're the only one facing a problem, you might be encountering [Cloudflare](/docs/guides/troubleshooting/#cloudflare) protection, an IP ban, or other countermeasures set by website owners against programs like **Tachiyomi**.
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1. Have a look at open issues [for the app](https://github.com/tachiyomiorg/tachiyomi/issues) and/or [**extensions**](https://github.com/tachiyomiorg/tachiyomi-extensions/issues).
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1. It may have been fixed already but not released yet, so look at closed issues ([app](https://github.com/tachiyomiorg/tachiyomi/issues?q=is%3Aissue+is%3Aclosed)/[extensions](https://github.com/tachiyomiorg/tachiyomi-extensions/issues?q=is%3Aissue+is%3Aclosed)) issues as well.
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1. If you can't find the issue there, open a new one.
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**To minimize future issues:**
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* Avoid using downloads with the source.
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* Reduce the number of series in your library from that source.
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> If the site is not reachable or has issues, all you can do is wait for the site to become functional again.
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::: warning
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These are general guidelines as each site has its specific undisclosed limits and triggers.
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:::
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## Widespread Issue
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When everyone experiences a problem, it could be with the extension or app:
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1. Check open issues [for the app](https://github.com/tachiyomiorg/tachiyomi/issues) and/or [**extensions**](https://github.com/tachiyomiorg/tachiyomi-extensions/issues).
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1. Check closed issues ([app](https://github.com/tachiyomiorg/tachiyomi/issues?q=is%3Aissue+is%3Aclosed)/[extensions](https://github.com/tachiyomiorg/tachiyomi-extensions/issues?q=is%3Aissue+is%3Aclosed)) in case it's resolved but not yet released.
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1. If not found, create a new issue.
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::: warning
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If the site itself is problematic, patience is the only solution until it becomes functional again.
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:::
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@ -1,103 +1,122 @@
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---
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title: Troubleshooting
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description: This page is for when you encounter a problem with a source or the app.
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description: Facing source or app issues? Here's how to troubleshoot.
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---
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# Troubleshooting
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This page is for when you encounter a problem with a source or the app.
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Facing source or app issues?
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Here's how to troubleshoot.
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## WebView
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### Loading the website in WebView
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Try to load the website in **WebView**.
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> Note that WebView is not the same as using your browser.
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### Accessing Websites via WebView
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::: tip How to open WebView
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1. Go to **Browse** in the bottom navbar.
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1. Press the source you would like to access.
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1. Press the **WebView** icon in the top toolbar.
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::: tabs
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== Using Browse
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1. Open **Browse** from the bottom navbar.
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1. Tap the desired source.
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1. Tap the **WebView** icon in the top toolbar.
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1. Complete a **CAPTCHA** if one is shown.
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1. Once done, press the X at the top left to return.
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1. Close by tapping `X` at the top-left.
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== Using Series
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1. Open a series.
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1. Tap the **WebView** icon button.
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1. Complete a **CAPTCHA** if one is shown.
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1. Close by tapping `X` at the top-left.
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:::
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You may need to try this multiple times.
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You can also try pressing the **Overflow** icon, opening the website in your regular browser, then checking for a **CAPTCHA** there.
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Repeat if needed.
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Alternatively, try opening the website in your browser using the **Overflow** icon and solve any **CAPTCHA** there.
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Some sources may have more advanced **Cloudflare** protection.
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If you are facing issues, try the following options.
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![Open WebView](/docs/guides/troubleshooting/open-webview.dark.webp =1079x520)
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### Clearing cookies and WebView data
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::: tip Guide
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1. Go to **More -> Settings -> Advanced**.
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1. Press **Clear cookies**.
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1. Press **Clear WebView data**.
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::: info Clearing cookies and WebView data
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1. Navigate to **More -> Settings -> Advanced**.
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1. Tap **Clear cookies**.
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1. Tap **Clear WebView data**.
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:::
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### Update WebView
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### WebView Update
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To update WebView, you need to find what WebView implementation is used on your device.
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In general, default implementation depends on the Android version as follows:
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- Android 10.0 and up - [Android System WebView](https://play.google.com/store/apps/details?id=com.google.android.webview).
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- Android from 7.0 to 9.0 - [Google Chrome](https://play.google.com/store/apps/details?id=com.android.chrome).
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- Android 6.0.1 and below - [Android System WebView](https://play.google.com/store/apps/details?id=com.google.android.webview).
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::: tip
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Users on Android 7.0 and up can also see and change WebView implementation in [Developer Options](https://developer.android.com/studio/debug/dev-options).
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::: tabs
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== Android 10 and above
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[Android System WebView](https://play.google.com/store/apps/details?id=com.google.android.webview)
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== Android 7-9
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[Google Chrome](https://play.google.com/store/apps/details?id=com.android.chrome)
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== Android 6 and below
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[Android System WebView](https://play.google.com/store/apps/details?id=com.google.android.webview)
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:::
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::: warning
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Non-standard implementations like Firefox can lead to Tachiyomi not working correctly or, in the worst-case, crash.
|
||||
It is recommended to set your WebView implementation to [Android System WebView](https://play.google.com/store/apps/details?id=com.google.android.webview) or [Google Chrome](https://play.google.com/store/apps/details?id=com.android.chrome).
|
||||
::: tip **Android 7** and above
|
||||
Newer Android users can check/change WebView in [Developer Options](https://developer.android.com/studio/debug/dev-options).
|
||||
:::
|
||||
|
||||
::: warning Caution with Non-Standard WebView
|
||||
Using non-standard WebView (like Firefox) might cause Tachiyomi malfunction or crashes.
|
||||
|
||||
It's best to choose [Android System WebView](https://play.google.com/store/apps/details?id=com.google.android.webview) or [Google Chrome](https://play.google.com/store/apps/details?id=com.android.chrome).
|
||||
:::
|
||||
|
||||
## Cloudflare
|
||||
|
||||
### Solving Cloudflare issues
|
||||
Cloudflare is an anti-bot mechanism.
|
||||
Some sources intentionally have a higher Cloudflare protection level to block apps like Tachiyomi.
|
||||
**Cloudflare**, an anti-bot mechanism, is used by some sources.
|
||||
Some sources intentionally have higher **Cloudflare** protection to deter apps like **Tachiyomi**.
|
||||
|
||||
You can try the following suggestions to help resolve Cloudflare challenges.
|
||||
|
||||
> If none of these help, wait until they lower their protection or migrate to other sources.
|
||||
|
||||
## Misc
|
||||
### Dealing with Cloudflare Looping
|
||||
Certain sources may employ more advanced **Cloudflare** protection, leading to WebView continuously loading when bypassing using the above solution.
|
||||
If this occurs, try [Accessing the Website via WebView](#accessing-websites-via-webview).
|
||||
|
||||
### Changing your user agent
|
||||
A user agent string helps websites identify information about the requester.
|
||||
This information may impact Cloudflare's bot detection.
|
||||
While some sources have user agent strings set, most rely on the default value set in the app.
|
||||
A user agent string shares requester information with websites, potentially affecting **Cloudflare**'s bot detection.
|
||||
While some sources have specific user agent strings, most rely on the app's default.
|
||||
|
||||
::: tip Guide
|
||||
1. Go to **More -> Settings -> Advanced**.
|
||||
1. Change the **Default user agent string** setting to a different one.
|
||||
> [This website](https://www.whatismybrowser.com/guides/the-latest-user-agent/) is a decent reference.
|
||||
1. Restart the app and try accessing the source again.
|
||||
::: info Changing your user agent
|
||||
1. Navigate to **More -> Settings -> Advanced**.
|
||||
2. Modify **Default user agent string** to another value.
|
||||
> [Here's a reference](https://www.whatismybrowser.com/guides/the-latest-user-agent/).
|
||||
3. Restart the app and retry source access.
|
||||
:::
|
||||
|
||||
### Unable to install the app or extensions
|
||||
Try installing [Split APK Installer](https://play.google.com/store/apps/details?id=com.aefyr.sai) from the Google Play Store, then use it to try and install the affected APK.
|
||||
**Split APK Installer** will tell you why the APK is uninstallable, or it will install the APK for you.
|
||||
Some common errors are listed below.
|
||||
|
||||
::: details INSTALL_FAILED_UPDATE_INCOMPATIBLE: Package eu.kanade.tachiyomi signatures do not match the previously installed version; ignoring!
|
||||
If **Split APK Installer** outputs the above error when attempting to install the APK, you are likely installing a official build over an existing **F-Droid** build.
|
||||
The **F-Droid** build has a different signature than the official build, so you must backup your data, uninstall the app, then restore the data in a fresh install.
|
||||
::: tip Did these methods not work?
|
||||
Wait for the source to lower its protection or switch to different sources.
|
||||
:::
|
||||
|
||||
::: details DISPLAY_NAME column is null
|
||||
If **Split APK Installer** outputs `DISPLAY_NAME column is null`, the APK you have downloaded is corrupted.
|
||||
Some users experience this error multiple times after redownloading the APK, so keep redownloading the APK until it installs correctly.
|
||||
:::
|
||||
## General
|
||||
|
||||
::: details INSTALL_FAILED_NO_MATCHING_ABIS
|
||||
If **Split APK Installer** outputs `INSTALL_FAILED_NO_MATCHING_ABIS`, the APK you have downloaded is the wrong one for your CPU architecture.
|
||||
Download the correct one or download the universal APK if you are not aware which CPU architecture your device uses.
|
||||
:::
|
||||
### Obtaining Logcats
|
||||
To diagnose abnormal app behavior, record device logs using a [Logcat Reader](https://play.google.com/store/apps/details?id=com.dp.logcatapp).
|
||||
|
||||
### Getting Logcats and Crash Logs
|
||||
To dump crash logs following an app crash, go to **More -> Settings -> Advanced -> Dump crash logs**.
|
||||
### Obtaining Crash Logs
|
||||
For crash investigations, navigate to **More -> Settings -> Advanced** and tap **Dump crash logs**.
|
||||
|
||||
![Dump crashlogs](/docs/guides/troubleshooting/dump-crash-logs.dark.webp =512x386)
|
||||
|
||||
To get device logs if the app is not behaving as expected, record device logs using a [Logcat Reader](https://play.google.com/store/apps/details?id=com.dp.logcatapp).
|
||||
### App or Extension Installation Issues
|
||||
Problematic with app or extension installation?
|
||||
Follow these steps:
|
||||
|
||||
1. Install [Split APK Installer](https://play.google.com/store/apps/details?id=com.aefyr.sai) from Google Play Store.
|
||||
1. Utilize it to install the `.apk`.
|
||||
|
||||
**Split APK Installer** clarifies issues or successfully installs.
|
||||
Common errors include:
|
||||
|
||||
::: details `INSTALL_FAILED_UPDATE_INCOMPATIBLE: Package eu.kanade.tachiyomi signatures do not match the previously installed version; ignoring!`
|
||||
Seeing this error while installing the `.apk` over an existing **F-Droid** build indicates a mismatch in signatures.
|
||||
Data backup, uninstall, and fresh installation are required.
|
||||
:::
|
||||
|
||||
::: details `DISPLAY_NAME column is null`
|
||||
Seeing this error points to a corrupted `.apk`.
|
||||
Redownload repeatedly to resolve.
|
||||
:::
|
||||
|
||||
::: details `INSTALL_FAILED_NO_MATCHING_ABIS`
|
||||
Seeing this error suggests the `.apk` is incompatible with your CPU architecture.
|
||||
Obtain the appropriate version or a universal `.apk`.
|
||||
:::
|
||||
|
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Reference in New Issue
Block a user