Fatal error: Uncaught Error: Interface "Kreait\Firebase\Exception\DatabaseException" not found in C:\xampp\htdocs\www\prohelp\vendor\kreait\firebase-php\src\Firebase\Exception\Database\ReferenceHasNotBeenSnapshotted.php:12 Stack trace: #0 {main} thrown in C:\xampp\htdocs\www\prohelp\vendor\kreait\firebase-php\src\Firebase\Exception\Database\ReferenceHasNotBeenSnapshotted.php on line 12