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 @ 01:20
Script: /wbb/search.php?searchid=289395&sid=95ef810e7ff1f5cc659ad7b3105f324c&page=2
Referer: http://www.delftseschaaksite.nl/wbb/search.php?searchid=289395&sid=95ef810e7ff1f5cc659ad7b3105f324c&page=2