Fatal error: Uncaught Error: Class "Google\Protobuf\Internal\Message" not found in C:\xampp\htdocs\API\vendor\google\cloud\DiscoveryEngine\src\V1\Answer\Step\Action\Observation\SearchResult.php:14 Stack trace: #0 {main} thrown in C:\xampp\htdocs\API\vendor\google\cloud\DiscoveryEngine\src\V1\Answer\Step\Action\Observation\SearchResult.php on line 14