Fatal error: Uncaught Error: Class "Google\Protobuf\Internal\Message" not found in D:\programs\xampp\htdocs\backend-test\vendor\google\gax\src\Testing\MockRequest.php:15 Stack trace: #0 {main} thrown in D:\programs\xampp\htdocs\backend-test\vendor\google\gax\src\Testing\MockRequest.php on line 15