Warning: mysqli_connect(): Error while reading greeting packet. PID=11172 in D:\Web\dapei\tupian\pic.php on line 33

Warning: mysqli_connect(): (HY000/2006): MySQL server has gone away in D:\Web\dapei\tupian\pic.php on line 33

Fatal error: Uncaught TypeError: mysqli_query(): Argument #1 ($mysql) must be of type mysqli, bool given in D:\Web\dapei\tupian\pic.php:35 Stack trace: #0 D:\Web\dapei\tupian\pic.php(35): mysqli_query(false, 'SET CHARACTER S...') #1 {main} thrown in D:\Web\dapei\tupian\pic.php on line 35