io.objectbox.exception.DbException Not a database file (-30793)

Describe the bug
io.objectbox.exception.DbException
Not a database file (-30793)

Basic info (please complete the following information):

• ObjectBox version : [2.8.1]
• Reproducibility: [occasionally without visible pattern]
• Device: [series]
• OS: [series]

Expected behavior
A clear and concise description of what you expected to happen.

Code
boxStore = MyObjectBox.builder().androidContext(context.applicationContext).build()

Logs, stack traces

io.objectbox.exception.DbException: Not a database file (-30793)
--
java.lang.RuntimeException:Unable to create application com.qq.ac.android.ComicApplication: io.objectbox.exception.DbException: Not a database file (-30793) (error code -30793)
android.app.ActivityThread.handleBindApplication(ActivityThread.java:5770)
......
Caused by:
io.objectbox.exception.DbException:Not a database file (-30793)
io.objectbox.BoxStore.nativeCreateWithFlatOptions(Native Method)
io.objectbox.BoxStore.<init>(SourceFile:17)
f.b.d.b(SourceFile:5)

Additional context
Initialization of the database is in the main thread, the main process. It was initialized only once.

The report points to MyObjectBox.builder().androidContext(...) and the BoxStore.nativeCreateWithFlatOptions stack trace; start by reviewing the ObjectBox 2.8.1 Android initialization and database file involved there. Reproduce the intermittent -30793 failure while recording the actual device, OS, and storage conditions, then verify the cause and fix.