Serverless - Service configuration is expected to be placed in a root of a service (working directory)

Question

I have this warning on GitHub Action:

Serverless: Deprecation warning: Service configuration is expected to be placed in a root of a service (working directory). All paths, function handlers in a configuration are > resolved against service directory". Starting from next major Serverless will no longer permit configurations nested in sub directories.

Does it mean I have to put serverless.yml (Service configuration) in the working directory?
If yes, which one is the working directory?

.github/workflows/deploy.yml

service: myservice
  jobs:
    deploy:
        # other steps here #

        - name: Serverless
          uses: serverless/github-action@master
          with:
            args: deploy --config ./src/MyStuff/serverless.yml

I store the serverless.yml in that path because it is related to Stuff.
I want to use multiple serverless.yml.
For AnotherStuff I will create src/AnotherStuff/serverless.yml .

So, what is the error, and the right way to do it?

[edit 21/02/2022]
I'm using the following workaround.
In GitHub Actions I have this job step in my build:

    - name: Serverless preparation
      run: | 
        # --config wants the serverless files in the root, so I move them there
        echo move configuration file to the root folder
        mv ./serverless/serverless.fsharp.yml ./serverless.fsharp.yml

Essentially, they want the file in the root folder... I put the file in the root folder.