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<b>Warning</b>:  Undefined variable $db in <b>/home/course/u03/public_html/submissions/submission06/scripts/checkoutProcess.php</b> on line <b>4</b><br />
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<b>Warning</b>:  Undefined variable $customerID in <b>/home/course/u03/public_html/submissions/submission06/scripts/checkoutProcess.php</b> on line <b>4</b><br />
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<b>Fatal error</b>:  Uncaught TypeError: mysqli_query(): Argument #1 ($mysql) must be of type mysqli, null given in /home/course/u03/public_html/submissions/submission06/scripts/checkoutProcess.php:80
Stack trace:
#0 /home/course/u03/public_html/submissions/submission06/scripts/checkoutProcess.php(80): mysqli_query()
#1 /home/course/u03/public_html/submissions/submission06/scripts/checkoutProcess.php(37): existingOrder()
#2 /home/course/u03/public_html/submissions/submission06/scripts/checkoutProcess.php(4): showReceipt()
#3 {main}
  thrown in <b>/home/course/u03/public_html/submissions/submission06/scripts/checkoutProcess.php</b> on line <b>80</b><br />