Hi,
i have a (very) old zammad server (5.0.x) and i want to upgrade to last version (if possible).
I installed the last version with no issue and follow the backup and restore procedure to import actual data to the new server but it’s failed with many errors like :
ERROR: duplicate key value violates unique constraint “channels_pkey”
…
ERROR: column “whitelisted_websites” of relation “chats” does not exist
…
ERROR: syntax error at or near “1”
So i guess a made a mistake somewhere.
Is there a way to make this upgrade safely ?
Actual version : 5.0.x
targeted version : latest
OS : Debian
D.