Fatal error: Uncaught TypeError: array_reverse(): Argument #1 ($array) must be of type array, null given in C:\inetpub\wwwroot\rdwebsite\gallery.php:121 Stack trace: #0 C:\inetpub\wwwroot\rdwebsite\gallery.php(121): array_reverse() #1 {main} thrown in C:\inetpub\wwwroot\rdwebsite\gallery.php on line 121