Redmine

did you migrate to redmine 5 already? you can't switch back to redmine 4 without restoring the database schema

1/ use a backup before the redmine 5 upgrade (you'll lose all data since then)
2/ upgrade to redmine 5, revert all migrations back to your desired version
3/ add missing columns manually, but this could cause inconsistencies / failures in the future because the migrations_schema won't match the real DB state.

Pavel Rosický wrote:

did you migrate to redmine 5 already? you can't switch back to redmine 4 without restoring the database schema

1/ use a backup before the redmine 5 upgrade (you'll lose all data since then)
2/ upgrade to redmine 5, revert all migrations back to your desired version
3/ add missing columns manually, but this could cause inconsistencies / failures in the future because the migrations_schema won't match the real DB state.

Yes, i did migrate to version 5 once then i switch back to the previous version & got this error.

As you specified in second point, how can i revert all migrations back to the previous version?

Also, Redmine is running on docker instance so is there any other alternative solution there?