SQL-DATABASE ERROR

Database error in WoltLab Burning Board (): Link-ID == false, connect failed
mysql error: Too many connections
mysql error number: 1040
mysql version: unknown
php version: 4.4.9
Date: 30.06.2022 @ 23:58
Script: /wbb2/profile.php?userid=41435&sid=1b6a3f7659971cf86d50c4c8c4c3feae
Referer: