The app throws NullPointerException and crashes when clicking "import from Archive"

[androidAppGuard]

the environment is as follows:

App version: v5.2.2
Android version: 6.0
Device: Nexux_5X

The steps to reproduce:

The exception log is as follows:

05-13 04:43:22.294 8181-8512/com.eleybourn.bookcatalogue E/BC Logger: An Exception Occured @ 2022-05-13 04:43:22
    In Phone Android SDK built for x86_64 (23) 
    Error running task
    java.lang.NullPointerException: Attempt to invoke interface method 'com.eleybourn.bookcatalogue.backup.ReaderEntity$BackupEntityType com.eleybourn.bookcatalogue.backup.ReaderEntity.getType()' on a null object reference
        at com.eleybourn.bookcatalogue.backup.tar.TarBackupReader.<init>(TarBackupReader.java:65)
        at com.eleybourn.bookcatalogue.backup.tar.TarBackupContainer.isValid(TarBackupContainer.java:107)
        at com.eleybourn.bookcatalogue.backup.BackupManager.readBackup(BackupManager.java:64)
        at com.eleybourn.bookcatalogue.filechooser.BackupLister.processList(BackupLister.java:62)
        at com.eleybourn.bookcatalogue.filechooser.FileLister.run(FileLister.java:53)
        at com.eleybourn.bookcatalogue.utils.SimpleTaskQueueProgressFragment$FragmentTaskWrapper.run(SimpleTaskQueueProgressFragment.java:275)
        at com.eleybourn.bookcatalogue.utils.SimpleTaskQueue.handleRequest(SimpleTaskQueue.java:364)
        at com.eleybourn.bookcatalogue.utils.SimpleTaskQueue.access$800(SimpleTaskQueue.java:56)
        at com.eleybourn.bookcatalogue.utils.SimpleTaskQueue$SimpleTaskQueueThread.run(SimpleTaskQueue.java:500)
05-13 04:43:22.327 8181-8199/com.eleybourn.bookcatalogue D/EGL_emulation: eglMakeCurrent: 0x7f1d32f8c7c0: ver 2 0 (tinfo 0x7f1d34785f40)
05-13 04:43:22.331 8181-8181/com.eleybourn.bookcatalogue E/BC Logger: An Exception Occured @ 2022-05-13 04:43:22
    In Phone Android SDK built for x86_64 (23) 
    
    java.lang.NullPointerException: Attempt to invoke interface method 'int java.util.List.size()' on a null object reference
        at android.widget.ArrayAdapter.getCount(ArrayAdapter.java:337)
        at android.widget.ListView.setAdapter(ListView.java:491)
        at com.eleybourn.bookcatalogue.filechooser.FileChooserFragment.onGotFileList(FileChooserFragment.java:243)
        at com.eleybourn.bookcatalogue.filechooser.FileChooser.onGotFileList(FileChooser.java:199)
        at com.eleybourn.bookcatalogue.filechooser.FileLister.onFinish(FileLister.java:63)
        at com.eleybourn.bookcatalogue.utils.SimpleTaskQueueProgressFragment$TaskFinishedMessage.deliver(SimpleTaskQueueProgressFragment.java:119)
        at com.eleybourn.bookcatalogue.utils.SimpleTaskQueueProgressFragment.deliverMessages(SimpleTaskQueueProgressFragment.java:194)
        at com.eleybourn.bookcatalogue.utils.SimpleTaskQueueProgressFragment.queueMessage(SimpleTaskQueueProgressFragment.java:161)
        at com.eleybourn.bookcatalogue.utils.SimpleTaskQueueProgressFragment.queueTaskFinished(SimpleTaskQueueProgressFragment.java:168)
        at com.eleybourn.bookcatalogue.utils.SimpleTaskQueueProgressFragment.access$300(SimpleTaskQueueProgressFragment.java:47)
        at com.eleybourn.bookcatalogue.utils.SimpleTaskQueueProgressFragment$FragmentTaskWrapper.onFinish(SimpleTaskQueueProgressFragment.java:284)
        at com.eleybourn.bookcatalogue.utils.SimpleTaskQueue.processResults(SimpleTaskQueue.java:431)
        at com.eleybourn.bookcatalogue.utils.SimpleTaskQueue.access$300(SimpleTaskQueue.java:56)
        at com.eleybourn.bookcatalogue.utils.SimpleTaskQueue$1.run(SimpleTaskQueue.java:341)
        at android.os.Handler.handleCallback(Handler.java:739)
        at android.os.Handler.dispatchMessage(Handler.java:95)
        at android.os.Looper.loop(Looper.java:148)
        at android.app.ActivityThread.main(ActivityThread.java:5417)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

[xzz-x]

Well, I reproduce these events in the picture and the app throws NullPointException because the hierarchy of the list components is not maintained.