Warning: mysqli_connect(): (HY000/1040): Too many connections in /home/voucher.com.vn/public_html/include/conn.php on line 8

Fatal error: Uncaught ArgumentCountError: mysqli_error() expects exactly 1 argument, 0 given in /home/voucher.com.vn/public_html/include/conn.php:9 Stack trace: #0 /home/voucher.com.vn/public_html/include/conn.php(9): mysqli_error() #1 /home/voucher.com.vn/public_html/include/user.php(4): require_once('...') #2 /home/voucher.com.vn/public_html/ma-giam-gia/block/v1.0.1/page-cat.php(11): require_once('...') #3 /home/voucher.com.vn/public_html/ma-giam-gia/main.php(104): include('...') #4 {main} thrown in /home/voucher.com.vn/public_html/include/conn.php on line 9