On Android 13

[TecumStricto]

It looks like some schanges to code are needed when going to Android 13

java.lang.IllegalArgumentException: com.selmet.inventarium: Targeting S+ (version 31 and above) requires that one of FLAG_IMMUTABLE or FLAG_MUTABLE be specified when creating a PendingIntent.
Strongly consider using FLAG_IMMUTABLE, only use FLAG_MUTABLE if some functionality depends on the PendingIntent being mutable, e.g. if it needs to be used with inline replies or bubbles.

..
com.tonyodev.fetch2.DefaultFetchNotificationManager.getActionPendingIntent(DefaultFetchNotificationManager.kt:173)
...

Kindly check it out.

[tonyofrancis]

New version 3.4.0 has been released that contains fixes for this issue.