Fatal error: Uncaught Error: Class "Google\Protobuf\Internal\Message" not found in C:\xampp\htdocs\API\vendor\google\cloud\Dialogflow\src\V2\Fulfillment\GenericWebService.php:21 Stack trace: #0 {main} thrown in C:\xampp\htdocs\API\vendor\google\cloud\Dialogflow\src\V2\Fulfillment\GenericWebService.php on line 21