Fatal error: Uncaught Facebook\Exceptions\FacebookSDKException: Sessions are not active. Please make sure session_start() is at the top of your script. in C:\xampp\htdocs\fantek\assets\plugins\facebook-sdk-v5\PersistentData\FacebookSessionPersistentDataHandler.php:50 Stack trace: #0 C:\xampp\htdocs\fantek\assets\plugins\facebook-sdk-v5\Helpers\FacebookRedirectLoginHelper.php(80): Facebook\PersistentData\FacebookSessionPersistentDataHandler->__construct() #1 C:\xampp\htdocs\fantek\assets\plugins\facebook-sdk-v5\Facebook.php(322): Facebook\Helpers\FacebookRedirectLoginHelper->__construct(Object(Facebook\Authentication\OAuth2Client), NULL, NULL, NULL) #2 C:\xampp\htdocs\eafg\navbar.php(31): Facebook\Facebook->getRedirectLoginHelper() #3 C:\xampp\htdocs\eafg\product2021Fusion.php(623): require_once('C:\\xampp\\htdocs...') #4 {main} thrown in C:\xampp\htdocs\fantek\assets\plugins\facebook-sdk-v5\PersistentData\FacebookSessionPersistentDataHandler.php on line 50