SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Link-ID == false, connect failed
mysql error: No such file or directory
mysql error number: 2002
mysql version: unknown
php version: 5.6.40-nmm8
Date: 16.05.2024 @ 05:29
Script: /xforum/report.php?postid=39832&sid=fff227b8961600978a9375e54e3dd733
Referer: