Fatal error: Uncaught mysqli_sql_exception: Unknown column 'first_name' in 'field list' in /home/harri679/public_html/infost440/assignment3/index.php:8 Stack trace: #0 /home/harri679/public_html/infost440/assignment3/index.php(8): mysqli_query(Object(mysqli), 'SELECT guestboo...') #1 {main} thrown in /home/harri679/public_html/infost440/assignment3/index.php on line 8