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: 5.6.40-70+0~20240421.84+debian11~1.gbp0c0ec4
Date: 04.06.2024 @ 11:20
Script: /Forum/wbb2/thread.php?hilightuser=0&threadid=460&threadview=1
Referer: