Fatal error: Uncaught Error: Interface "Kreait\Firebase\Contract\Database" not found in D:\programs\xampp\htdocs\backend-test\vendor\kreait\firebase-php\src\Firebase\Database.php:22 Stack trace: #0 {main} thrown in D:\programs\xampp\htdocs\backend-test\vendor\kreait\firebase-php\src\Firebase\Database.php on line 22