SQL-DATABASE ERROR

Database error in WoltLab Burning Board: Link-ID == false, connect failed
mysql error: Too many connections
mysql error number: 1040
Date: 26.05.2024 @ 00:32
Script: /usercp.php?action=addsubscription&threadid=5627&sid=0aaf0bb8ad2a1e745c62be67ddc13b06
Referer: