Fatal error: Uncaught TypeError: readdir(): Argument #1 ($dir_handle) must be of type resource or null, bool given in C:\xampp\htdocs\content\proxyFolder.php:17 Stack trace: #0 C:\xampp\htdocs\content\proxyFolder.php(17): readdir(false) #1 {main} thrown in C:\xampp\htdocs\content\proxyFolder.php on line 17