Fatal error: Uncaught Error: Class "Google\Protobuf\Internal\Message" not found in C:\xampp\htdocs\API\vendor\google\cloud\AppsChat\src\Chat\V1\ContextualAddOnMarkup\Card\CardHeader.php:14 Stack trace: #0 {main} thrown in C:\xampp\htdocs\API\vendor\google\cloud\AppsChat\src\Chat\V1\ContextualAddOnMarkup\Card\CardHeader.php on line 14