Warning: Undefined variable $db in /home/course/u61/public_html/submissions/submission06/scripts/process_catalog.php on line 6
Fatal error: Uncaught TypeError: mysqli_query(): Argument #1 ($mysql) must be of type mysqli, null given in /home/course/u61/public_html/submissions/submission06/scripts/process_catalog.php:6
Stack trace:
#0 /home/course/u61/public_html/submissions/submission06/scripts/process_catalog.php(6): mysqli_query()
#1 {main}
thrown in /home/course/u61/public_html/submissions/submission06/scripts/process_catalog.php on line 6