SQL-DATABASE ERROR

Database error in WoltLab Burning Board: Link-ID == false, connect failed
mysql error: Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)
mysql error number: 2002
Date: 21.05.2024 @ 07:13
Script: /wbb/login.php?sid=5ada09dc6f726c8a3ead1a3476983262
Referer: http://www.delftseschaaksite.nl/wbb/login.php?sid=5ada09dc6f726c8a3ead1a3476983262