Warning: mysqli_connect(): MySQL server has gone away in /var/www/html/v3/db_init.php on line 13

Warning: mysqli_connect(): Error while reading greeting packet. PID=22943 in /var/www/html/v3/db_init.php on line 13

Warning: mysqli_connect(): (HY000/2006): MySQL server has gone away in /var/www/html/v3/db_init.php on line 13
MySQL server has gone away at line 14 in the file /var/www/html/v3/db_init.php