Crash on first launch and after confirming storage location

[renyuneyun]

I'm experiencing crash recently (it worked well previously). Therefore, I planned to reset the app.
After resetting, it crashes on the first screen (welcome), after launched for 0.5s. I granted the write permission, and this won't crash.
However, after choosing the storage location afterwards, and pressing the "next" button, it crashes again. It never shows the actual main page of the app.

I copied the crash log below:

time: 1615647319041
msg: java.lang.Exception: Read empty file: org.decsync.library.RealFileSys@4c941a5
stacktrace: java.lang.Exception: Read empty file: org.decsync.library.RealFileSys@4c941a5
	at org.decsync.library.NativeFile.read(NativeFile.kt:4)
	at org.decsync.library.DecsyncFile.readLines(DecsyncFile.kt:1)
	at org.decsync.library.DecsyncFile.readLines$default(DecsyncFile.kt:1)
	at org.decsync.library.DecsyncV1$Companion.getStaticInfo(DecsyncV1.kt:6)
	at org.decsync.library.Decsync$Companion.getStaticInfo(Decsync.kt:6)
	at org.decsync.cc.MainActivity.loadBooks(MainActivity.kt:6)
	at org.decsync.cc.MainActivity.access$loadBooks(MainActivity.kt:1)
	at org.decsync.cc.MainActivity$onResume$3.invokeSuspend(MainActivity.kt:2)
	at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:3)
	at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:15)
	at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:1)
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:4)
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:4)
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:1)

Some device information:
Device: OnePlus 6
Android version: 10
ROM: BlissROM 12.12

[renyuneyun]

By the way, the calendar entries were still being updated while the UI of the app crashes. I confirmed this before resetting the app.

[bugsbunny88]

any resolution on this?