Fatal error: Uncaught ArgumentCountError: mysqli_close() expects exactly 1 argument, 0 given in /home/sweater/public_html/youraccount/sign_out.php:7 Stack trace: #0 /home/sweater/public_html/youraccount/sign_out.php(7): mysqli_close() #1 {main} thrown in /home/sweater/public_html/youraccount/sign_out.php on line 7