Warning: mysqli::__construct(): Error while reading greeting packet. PID=2145859 in /var/www/html/v1.0/include/connectivity/db.php on line 2

Fatal error: Uncaught mysqli_sql_exception: MySQL server has gone away in /var/www/html/v1.0/include/connectivity/db.php:2 Stack trace: #0 /var/www/html/v1.0/include/connectivity/db.php(2): mysqli->__construct() #1 /var/www/html/v1.0/include/structure/connect.php(5): include('...') #2 /var/www/html/v1.0/pages/goods.php(8): require_once('...') #3 {main} thrown in /var/www/html/v1.0/include/connectivity/db.php on line 2