I’m currently in the following dead-end. I tried to upgrade from v19 to v21, which obviously was a mistake.
The upgrade fails with the following error:
Exception: Updates between multiple major versions and downgrades are unsupported.
When recreating the container with a v20 image I get the following error and the container is not starting:
Can’t start Nextcloud because the version of the data (18.104.22.168) is higher than the docker image version (22.214.171.124) and downgrading is not supported. Are you sure you have pulled the newest image version?
The same error occurs when using the original v19 image.
How can I escape from this situation? Any trick? I didn’t found a solution in this forum. Unfortunately, I don’t have a DB backup.
Thanks for your help.