Fatal error: Uncaught TypeError: App\Utility\Helper::cdn(): Argument #1 ($path) must be of type string, null given, called in /www/wwwroot/FAR/demo-www/app/Http/Controllers/PostController.php on line 27 and defined in /www/wwwroot/FAR/demo-www/app/Utility/Helper.php:20 Stack trace: #0 /www/wwwroot/FAR/demo-www/app/Http/Controllers/PostController.php(27): App\Utility\Helper::cdn() #1 /www/wwwroot/FAR/demo-www/public/index.php(101): Controller\PostController->article() #2 {main} thrown in /www/wwwroot/FAR/demo-www/app/Utility/Helper.php on line 20