Fatal error: Uncaught Error: mysqli object is already closed in C:\xampp\htdocs\med\include\footer.php:24 Stack trace: #0 C:\xampp\htdocs\med\include\footer.php(24): mysqli->query('SELECT visitor,...') #1 C:\xampp\htdocs\med\linkbanner.php(42): include('C:\\xampp\\htdocs...') #2 {main} thrown in C:\xampp\htdocs\med\include\footer.php on line 24