Warning: mysqli_connect(): MySQL server has gone away in /www/wwwroot/www/config.php on line 2

Warning: mysqli_connect(): Error while reading greeting packet. PID=1050 in /www/wwwroot/www/config.php on line 2

Warning: mysqli_connect(): (HY000/2006): MySQL server has gone away in /www/wwwroot/www/config.php on line 2

Warning: mysqli_query() expects parameter 1 to be mysqli, boolean given in /www/wwwroot/www/config.php on line 3
error