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 @ 05:27
Script: /wbb/newthread.php?boardid=21&sid=5c700ea135f2c27d9d79b816fd6d7038
Referer: http://www.delftseschaaksite.nl/wbb/newthread.php?boardid=21&sid=5c700ea135f2c27d9d79b816fd6d7038