Warning: mysqli_connect(): (HY000/1226): User 'kahwinma_v2015' has exceeded the 'max_user_connections' resource (current value: 30) in /home/kahwinma/public_html/include/config.php on line 21

Warning: mysqli_error() expects exactly 1 parameter, 0 given in /home/kahwinma/public_html/include/config.php on line 21
I cannot connect to the database because: