Warning: mysqli_connect(): Error while reading greeting packet. PID=3928 in D:\Web\9meijia\meijia.php on line 42

Warning: mysqli_connect(): (HY000/2006): MySQL server has gone away in D:\Web\9meijia\meijia.php on line 42

Fatal error: Uncaught TypeError: mysqli_query(): Argument #1 ($mysql) must be of type mysqli, bool given in D:\Web\9meijia\meijia.php:44 Stack trace: #0 D:\Web\9meijia\meijia.php(44): mysqli_query(false, 'SET CHARACTER S...') #1 {main} thrown in D:\Web\9meijia\meijia.php on line 44