Fatal error: Uncaught Error: Interface "Google\Auth\FetchAuthTokenInterface" not found in /var/www/html/firePhpSdk/vendor/google/cloud-core/src/AnonymousCredentials.php:26 Stack trace: #0 {main} thrown in /var/www/html/firePhpSdk/vendor/google/cloud-core/src/AnonymousCredentials.php on line 26