Fatal error: Uncaught Error: Interface 'Google\Auth\ExternalAccountCredentialSourceInterface' not found in C:\Apache24\htdocs\vendor\google\auth\src\CredentialSource\UrlSource.php:30 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\vendor\google\auth\src\CredentialSource\UrlSource.php on line 30