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: 20.05.2024 @ 14:07
Script: /wbb2/calendar.php?sid=5f17aa9e82177e07e97ef84cbb29749c
Referer: