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 @ 22:05
Script: /usercp.php?action=addsubscription&threadid=3796&sid=0e88bdfe4ac104f5c9ca648c72f2adf5
Referer: