Do you have different configurations set in Kobo Utilities forr you various Kobos?
Unhandled means, there was no error routine for whatever went wrong with the backupoptionsstore
A WAG
Check the place you set in the driver (for Aura1) on where to put backups of the KoboDB) (mine just puts it int Documents by default)
Looks like this (aura2)
KoboReader-KoboAuraEdition2-N236720397339-20200719-080931.zip
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