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: 4.4.4-8+etch6
Date: 04.10.2022 @ 20:59
Script: /forum/register.php?sid=3a679f6f12d5dbcad5dac512bc7ed2c3
Referer: