UBB.threads PHP Forum Software Community Forums Resources and Customizing Admin Zone How do I locate the database error?

Many thanks, the entire issue arose because the HDD got filled up so the server ran out of space.

Accessing the forums now shows the following message:

Script:
Line#:
SQL Error: Access denied for user 'xyz'@'localhost' (using password: NO)
SQL Error #: 1045
Query: Unable to connect to the database!

Do I need to reboot something to get things back to normal or is the source of the issue elsewhere?