Warning: mysqli::__construct(): Error while reading greeting packet. PID=1712515 in /var/www/papyruslibrary.com/connection.php on line 19

Fatal error: Uncaught mysqli_sql_exception: MySQL server has gone away in /var/www/papyruslibrary.com/connection.php:19 Stack trace: #0 /var/www/papyruslibrary.com/connection.php(19): mysqli->__construct() #1 /var/www/papyruslibrary.com/test.php(3): include('...') #2 {main} thrown in /var/www/papyruslibrary.com/connection.php on line 19