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 @ 02:51
Script: /wbb/thread.php?threadid=5625&sid=a8fd8c7f4bdfc92ec2ab53b33ff84e9f
Referer: http://delftseschaaksite.nl/wbb/thread.php?threadid=5625&sid=a8fd8c7f4bdfc92ec2ab53b33ff84e9f