Fatal error: Uncaught Error: Interface "Firebase\Auth\Token\Domain\Generator" not found in /var/www/html/firePhpSdk/vendor/kreait/firebase-php/src/Firebase/Auth/CustomTokenViaGoogleIam.php:19 Stack trace: #0 {main} thrown in /var/www/html/firePhpSdk/vendor/kreait/firebase-php/src/Firebase/Auth/CustomTokenViaGoogleIam.php on line 19