(Line: 3, Col: 1): Unrecognized named-value: 'matrix'. Located at position 1 within expression: matrix.python-version, (Line: 3, Col: 1): Unexpected value '' name: Python package on: push: branches: [ master ] pull_request: branches: [ master ] jobs: build: runs-on: ubuntu-latest strategy: matrix: python-version: [3.6, 3.7] steps: - uses: actions/checkout@v2 - name: Set up Python ${{ matrix.python-version }} uses: actions/setup-python@v2 with: python-version: ${{ matrix.python-version }} - name: Install dependencies run: | python -m pip install --upgrade pip pip install pytest if [ -f requirements.txt ]; then pi[...]