Custom imageboards doesn't keep saved after closing Android App

[TheKoakuma]

Bug description

When using a custom source (e.g. Hypnohub) the app recognizes and loads but after closing the source doesn't persists, needing to re-add every time the app is closed.

Steps to reproduce

1. Go to Sources
2. Click on add
3. Add the custom source
4. Go back to main screen
5. Search something to see that it works
6. Close Grabber (doesn't matter if closes on back button then exit or if closes opening the recent apps then throw to side)
7. Reopen Grabber
8. Go to sources
9. See that the custom source just vanished

8 alt. If you try searching without changing or re-adding the source the app just crash and close

Screenshots

https://youtu.be/gcCfFglISYM

System information

• Device: Xiaomi Redmi Note 10 5G
• OS: Android 11 MIUI 12.5
• Grabber version: 7.6.2
• No root, No custom rom, No unlocked bootloader