Repair MariaDB/mysql Connections Post-Migration

Our server were recently rescued from cpanel backups but its newer in versions than previous, since the move, none of them can reach the database—every request on sistes with db returns 500. The machine is running MariaDB, so the first objective is to track down and resolve whatever is blocking or mis-mapping those connections.

Deliverables (acceptance criteria)
• Sites load without any “database not found” errors and can read/write as expected.

You can check first the server.

Second task (paid separately) will be to migrate a server downloading backups, and then Ill reinstall it and restore it in the new one.