I'm unable to open books from the FBReader Library

If you're experiencing issues opening books in FBReader, especially on Android 10 and higher, it may be due to file access restrictions. Since version 3.8, FBReader uses Google’s modern Storage Access Framework, which may disable file access by default on some devices.

To enable file access, follow these steps:

1. Open the Settings app on your device.

2. Search for All files access and enter the section.

3. Tap the three-dot button in the upper-right corner and select Show system.

4. Find External Storage item in the list and enable it.
5. Restart your device to ensure the changes take effect.

Once enabled, Android will grant file access to applications, including FBReader.