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Fatal error: Uncaught mysqli_sql_exception: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 in /home/course/u09/public_html/submissions/submission06/scripts/process_checkout.php:11 Stack trace: #0 /home/course/u09/public_html/submissions/submission06/scripts/process_checkout.php(11): mysqli_query() #1 /home/course/u09/public_html/submissions/submission06/pages/checkout.php(15): include('...') #2 {main} thrown in /home/course/u09/public_html/submissions/submission06/scripts/process_checkout.php on line 11