Fatal error: Uncaught Error: Interface 'Firebase\Auth\Token\Domain\Generator' not found in /home/israasch/public_html/school_app/vendor/kreait/firebase-php/src/Firebase/Auth/CustomTokenViaGoogleIam.php:21 Stack trace: #0 {main} thrown in /home/israasch/public_html/school_app/vendor/kreait/firebase-php/src/Firebase/Auth/CustomTokenViaGoogleIam.php on line 21