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Fatal error: Uncaught TypeError: Argument 1 passed to Facebook\FacebookRequest::__construct() must be an instance of Facebook\FacebookSession, null given, called in /home/dradmin/public_html/fbdevbetashowcase/index.php on line 42 and defined in /home/dradmin/public_html/fbdevbetashowcase/facebook-php-sdk-v4-4.0-dev/src/Facebook/FacebookRequest.php:181 Stack trace: #0 /home/dradmin/public_html/fbdevbetashowcase/index.php(42): Facebook\FacebookRequest->__construct(NULL, 'GET', '/me/friends?lim...') #1 {main} thrown in /home/dradmin/public_html/fbdevbetashowcase/facebook-php-sdk-v4-4.0-dev/src/Facebook/FacebookRequest.php on line 181