Request to proto3 service with optional fails

[jbub]

Proto file(s)

syntax = "proto3";

package helloworld;

service OptionalGreeter {
  rpc SayHello (HelloRequest) returns (HelloReply) {}
}

// The request message containing the user's name.
message HelloRequest {
  optional string name = 1;
}

// The response message containing the greetings
message HelloReply {
  string message = 1;
}

Command line arguments / config
List all command line arguments or config properties

Describe the bug
When calling proto3 service which contains optional field, it fails with field has label LABEL_OPTIONAL, but proto3 must omit labels other than 'repeated'.

To Reproduce
Use proto above and make a call to HelloRequest.

Expected behavior
Request succeeds.

Environment

• OS: darwin/arm64
• ghz: 0.102.0