Fatal error: Uncaught Error: Interface "Firebase\Auth\Token\Domain\Verifier" not found in C:\xampp\htdocs\www\prohelp\vendor\kreait\firebase-php\src\Firebase\Auth\IdTokenVerifier.php:20 Stack trace: #0 {main} thrown in C:\xampp\htdocs\www\prohelp\vendor\kreait\firebase-php\src\Firebase\Auth\IdTokenVerifier.php on line 20