Warning: Undefined variable $mysqli in /users/2017/i1758060/public_html/2022/WebDB/mySelect.php on line 5

Fatal error: Uncaught TypeError: mysqli_set_charset(): Argument #1 ($mysql) must be of type mysqli, null given in /users/2017/i1758060/public_html/2022/WebDB/mySelect.php:5 Stack trace: #0 /users/2017/i1758060/public_html/2022/WebDB/mySelect.php(5): mysqli_set_charset() #1 {main} thrown in /users/2017/i1758060/public_html/2022/WebDB/mySelect.php on line 5