Stuck on NC 20.0.5, Uprade repeats forever

Hi Guys,

i am tired and like to ask for help, please

NC 20.0.5 is running on ISPConfig3

i tried every way to update and upgrade

the systems always telling me that everything is fine, also the upgrade.
but when its done, the upgrade screen comes back

i tried and 21 as well, same!
Also I tried Webupgrade, occ upgrade, and Installing by Zip over it

How can I tell the System to mark the Upgrade as finished

After Upgrade all Versions seem to be fine, but Upgrade Dialog never vanishes

Please Help!