Display MoreThanks for the hint. The script has fixed the OMV Extras package repository listings.
For anyone finding this thread in search for the resolution, use this command:
wget -O - https://github.com/OpenMediaVault-Plugin-Developers/installScript/raw/master/fix7to8upgrade | sudo bash
(The source code can be found here.)
Anyway, it would be nice to document this case, and/or add notice (or warning) highlights for users attempting to upgrade.
Best regards
Thank you