Fatal error: Uncaught Error: Class "Kreait\Firebase\Exception\RuntimeException" not found in C:\xampp\htdocs\attendance_app\vendor\kreait\firebase-php\src\Firebase\Exception\Database\DatabaseError.php:10 Stack trace: #0 {main} thrown in C:\xampp\htdocs\attendance_app\vendor\kreait\firebase-php\src\Firebase\Exception\Database\DatabaseError.php on line 10