Fatal error: Uncaught TypeError: mysqli_query(): Argument #1 ($mysql) must be of type mysqli, null given in C:\xampp\htdocs\MA\TZoffset.php:4 Stack trace: #0 C:\xampp\htdocs\MA\TZoffset.php(4): mysqli_query(NULL, 'Select now()') #1 {main} thrown in C:\xampp\htdocs\MA\TZoffset.php on line 4