Fatal error: Uncaught TypeError: mysqli_query(): Argument #1 ($mysql) must be of type mysqli, null given in /home1/danielap/public_html_8x/golf/misreservas.php:19 Stack trace: #0 /home1/danielap/public_html_8x/golf/misreservas.php(19): mysqli_query(NULL, 'SELECT * FROM H...') #1 {main} thrown in /home1/danielap/public_html_8x/golf/misreservas.php on line 19