Fatal error: Uncaught TypeError: mysqli_query(): Argument #1 ($mysql) must be of type mysqli, null given in /home/course/u24/public_html/submissions/submission06/scripts/catalogProcess.php:11 Stack trace: #0 /home/course/u24/public_html/submissions/submission06/scripts/catalogProcess.php(11): mysqli_query() #1 {main} thrown in /home/course/u24/public_html/submissions/submission06/scripts/catalogProcess.php on line 11