GitHub Actions CD "Cannot find path because it does not exist"

I’m quite new to using Actions, and I’m having some trouble. My YML file looks like this:

name: Build
on:
  workflow_dispatch:
  push:
    branches: ["main", "master"]
jobs:
  build:
    runs-on: windows-latest
    steps:
      - name: Build with py2exe
        run: |
          pip install py2exe
          cd app
          python setup.py py2exe

I’m trying to compile app/main.py into a .exe file. I’m able to run these commands from my Windows 10 computer, but with Actions, it fails with:

Line |
   3 |  cd app
     |  ~~~~~~
     | Cannot find path 'D:\a\Pokemon-PythonRed\Pokemon-PythonRed\app' because it does not exist.

I’m sure there’s an app directory, you can check for yourself here.

What am I doing wrong? Thank you in advance.

>Solution :

You need to check out the repo to access it in the workflow:

https://github.com/actions/checkout