Bug: After mattermost migration from MySQL to Postgresql boards are behaving strangely

[moonaala]

Steps to reproduce the behavior

1. I migrated mattermost to postgreSQL from MySQL.

2. I followed all the steps mentioned on this page: https://docs.mattermost.com/deploy/postgres-migration.html

3. After mattermost migration from MySQL to Postgresql boards are behaving strangely

4. On a team, i get the boards on my desktop app and on other team i am getting error of You are about to join a private board.
   But the same board which worked on my desktop app is showing joining private board message on web version.

5. For the one which works on my desktop app here is the url
   https://mattermost-server/plugins/focalboard/api/v2/teams/w8orwn8u7bg4x8da9gqosuomna/users

6. On web, i am getting {"error":"User IDs are empty","errorCode":400} error

7. Other errors: That is something like this

URL: https://mattermost-server/plugins/focalboard/api/v2/boards/b8dy7huuhtpdftx385htrmn4agh/blocks?all=true

Response: {"error":"{boards} not found","errorCode":404}

Expected behavior

All the boards should work on both web and desktop and all the users must be able to see the same output.

If applicable, add screenshots or a screen recording to elaborate on the problem.

Edition and Platform

• Edition: Personal Desktop / Personal Server / Mattermost Boards (plugin)
• Version: [v8.0]
• Browser and OS: Chrome on Mac

[DerekJarvis]

I am also experiencing this. I would really like to get boards working again, is there a way to fully reset the boards plugin and let me import my boards from the .boardarchive format?

[alternativc]

Same here, after migrating from mysql to postgres