Fatal error: Uncaught exception 'Facebook\Exceptions\FacebookAuthenticationException' with message 'You cannot access the app till you log in to www.facebook.com and follow the instructions given.' in /var/www/html/assets/php-graph-sdk-5.7.0/src/Facebook/Exceptions/FacebookResponseException.php:89 Stack trace: #0 /var/www/html/assets/php-graph-sdk-5.7.0/src/Facebook/FacebookResponse.php(210): Facebook\Exceptions\FacebookResponseException::create(Object(Facebook\FacebookResponse)) #1 /var/www/html/assets/php-graph-sdk-5.7.0/src/Facebook/FacebookResponse.php(255): Facebook\FacebookResponse->makeException() #2 /var/www/html/assets/php-graph-sdk-5.7.0/src/Facebook/FacebookResponse.php(82): Facebook\FacebookResponse->decodeBody() #3 /var/www/html/assets/php-graph-sdk-5.7.0/src/Facebook/FacebookClient.php(225): Facebook\FacebookResponse->__construct(Object(Facebook\FacebookRequest), '{"error":{"mess...', 400, Array) #4 /var/www/html/assets/php-graph-sdk-5.7.0/src/Facebook/Facebook.php(469): Facebook\FacebookClient->sendRequest( in /var/www/html/assets/php-graph-sdk-5.7.0/src/Facebook/Exceptions/FacebookResponseException.php on line 89