Warning: Undefined array key "customer_id" in /home/course/u09/public_html/staged/scripts/rm_from_cart.php on line 7

Fatal error: Uncaught mysqli_sql_exception: Incorrect integer value: '' for column 'c_id' at row 1 in /home/course/u09/public_html/staged/scripts/cart_utils.php:7 Stack trace: #0 /home/course/u09/public_html/staged/scripts/cart_utils.php(7): mysqli_query() #1 /home/course/u09/public_html/staged/scripts/rm_from_cart.php(8): get_order_id() #2 {main} thrown in /home/course/u09/public_html/staged/scripts/cart_utils.php on line 7