Warning: mysqli::__construct(): Error while reading greeting packet. PID=1415442 in /var/www/html/inc/db.php on line 18

Fatal error: Uncaught mysqli_sql_exception: MySQL server has gone away in /var/www/html/inc/db.php:18 Stack trace: #0 /var/www/html/inc/db.php(18): mysqli->__construct() #1 /var/www/html/inc/page_header.php(15): include('...') #2 /var/www/html/index.php(33): include('...') #3 {main} thrown in /var/www/html/inc/db.php on line 18