failed to read input as JSON: bad input: expecting start of JSON object: '{' ; instead got [

[XiaoLiu]

This is my question in following:

I use evans cli mode
evans --path $GOPATH/src --path . --proto pkg/api/gcserver.proto cli call api.GCServer.Cart --file cart_request.json

My gcserver.proto

message UpstreamRequest {
  string params = 1;
  string request_url = 2;
  map<string, UpstreamRequestHeaderValues> headers = 3;
}
message UpstreamRequestHeaderValues { repeated string values = 1; }

My cart_request.json

{
    "params": "yes",
    "request_url": "http://localhost:16048/cart/1",
    "headers":{
        "Request Method":["POST"]
    }
}

Why I run that command always have errors ?
evans: failed to run CLI mode: failed to call RPC 'Cart': failed to read input as JSON: bad input: expecting start of JSON object: '{' ; instead got [

I use vscode to edit in macOS Big Sur 11.6.4

[ktr]

Please follow the issue template.

---

Your JSON input is not valid because it doesn't have values field. The following JSON input is valid.

{
  "params": "yes",
  "requestUrl": "http://localhost:16048/cart/1",
  "headers": {
    "Request Method": {
      "values": [
        "POST"
      ]
    }
  }
}