Critical Error occured

Errordetails:
Database error: Link-ID == false, connect to localhost failed
mysql error: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (111)
mysql error number: 2002
Date: 09.12.2024 @ 13:50
Script: /UltraStats-CoD1/damagetypes.php?id=MOD_IMPACT
Referer: