Custom Copybara file support might be broken?

[PhilipVinc]

I am using the following GitHub action yml file:

on:
  push:
jobs:
  move-code:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
        with:
          fetch-depth: 0

      - uses: olivr/copybara-action@v1.2.4
        with:
          ssh_key: ${{ secrets.GH_BOT_SSH_PRIV_KEY }}
          access_token: ${{ secrets.GH_BOT_GITHUB_TOKEN }}
          sot_repo: NeuralQXLab/omnia
          destination_repo: NeuralQXLab/netket_pro
          custom_config: config/copybara/copy.bara.sky

But I see a failure when running, and in debug mode the error is

##[debug]Result: '***'
##[debug]Loading env
Run olivr/[email protected]
  with:
    ssh_key: ***
    access_token: ***
    sot_repo: NeuralQXLab/omnia
    destination_repo: NeuralQXLab/netket_pro
    custom_config: config/copybara/copy.bara.sky
    push_include: **
    pr_include: **
    committer: Github Actions <[email protected]>
    copybara_image: olivr/copybara
    copybara_image_tag: latest
    create_repo: yes
##[debug]BEWARE: Debug mode is on, this could result in this action succeeding while it didn't. Check the logs.
##[debug]Save config files
/home/runner/work/_actions/olivr/copybara-action/v1.2.4/dist/index.js:136182
                    const configFile = path_1.default.join(process.cwd(), this.config.customConfig);
                                                      ^
TypeError: Cannot read properties of undefined (reading 'join')
    at CopybaraAction.<anonymous> (/home/runner/work/_actions/olivr/copybara-action/v1.2.4/dist/index.js:136182:55)
    at Generator.next (<anonymous>)
    at /home/runner/work/_actions/olivr/copybara-action/v1.2.4/dist/index.js:136062:71
    at new Promise (<anonymous>)
    at __webpack_modules__.94675.__awaiter (/home/runner/work/_actions/olivr/copybara-action/v1.2.4/dist/index.js:136058:12)
    at CopybaraAction.getCopybaraConfig (/home/runner/work/_actions/olivr/copybara-action/v1.2.4/dist/index.js:136179:16)
    at CopybaraAction.<anonymous> (/home/runner/work/_actions/olivr/copybara-action/v1.2.4/dist/index.js:136201:76)
    at Generator.next (<anonymous>)
    at fulfilled (/home/runner/work/_actions/olivr/copybara-action/v1.2.4/dist/index.js:136059:58)
Node.js v20.13.1
##[debug]Node Action run completed with exit code 1
##[debug]Finishing: Run olivr/[email protected]

I'm not familiar with node, so I don't fully understand everything, but it seems to me that path in here is not set?

copybara-action/src/copybaraAction.ts

Line 130 in c6f5210

const configFile = path.join(process.cwd(), this.config.customConfig);