I have two running Owncloud systems which I’ve tried to migrate to Nextcloud using the manual migration process:
version 9,1,2,5 went beautifully
version 9,1,8,2 fails with the following error message when I run this command “sudo -u www-data php occ upgrade”:
An unhandled exception has been thrown:
OC\HintException: : Downgrading is not supported and is likely to cause unpredictable issues (from 18.104.22.168 to 22.214.171.124) ()
I’ve followed the instructions on this page https://docs.nextcloud.com/server/12/admin_manual/maintenance/manual_upgrade.html and using the reference on this page https://docs.nextcloud.com/server/13/admin_manual/maintenance/migrating_owncloud.html
I’m trying to use the 10.0.x Nextcloud download as the first step.
Any thoughts? Please. Many thanks.