Fatal error: Uncaught Error: Interface "Kreait\Firebase\Contract\RemoteConfig" not found in D:\programs\xampp\htdocs\backend-test\vendor\kreait\firebase-php\src\Firebase\RemoteConfig.php:25 Stack trace: #0 {main} thrown in D:\programs\xampp\htdocs\backend-test\vendor\kreait\firebase-php\src\Firebase\RemoteConfig.php on line 25