Fatal error: Uncaught Error: Interface "Kreait\Firebase\Exception\AuthException" not found in D:\xampp\htdocs\vendor\kreait\firebase-php\src\Firebase\Exception\Auth\AuthError.php:11 Stack trace: #0 {main} thrown in D:\xampp\htdocs\vendor\kreait\firebase-php\src\Firebase\Exception\Auth\AuthError.php on line 11