Did some searching around, its got to do with android 11. Previous version still worked as the app already had access permission to android/data, so it wasn't affected yet. But after we installed the new version, the access block kicked in
From
https://mediu m.com/androiddevelopers/android-11-storage-faq-78cefea52b7c
My guess is the mod is unable to access the app folder and crashed the app. I tried installed unmodded apk and from google playstore and both are fine