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: 5.6.11-1~dotdeb+7.1
Date: 27.05.2017 @ 06:21
Script: /profile.php?userid=40182&sid=cac8b8e32a58ddb94eedffcceaafaee5
Referer: