SQL-DATABASE ERROR

Database error in WoltLab Burning Board: Link-ID == false, connect failed
mysql error: Too many connections
mysql error number: 1040
Date: 24.05.2024 @ 19:15
Script: /usercp.php?action=addsubscription&boardid=39&sid=0ecf9286f6ab92c0a4a9078dc4cf8d6a
Referer: