The workflow is not valid. .github/workflows/test.yml (Line: 28, Col: 9): Unrecognized function: 'exists'. Located at position 135 within expression: !contains(github.repository, 'solaris') && !contains(github.repository, 'dragonflybsd') && !contains(github.repository, 'omnios') && (exists('conf/${{ matrix.release }}-${{ matrix.arch }}.conf') || matrix.release == '' || matrix.arch == '') .github/workflows/test.yml (Line: 116, Col: 9): Unrecognized function: 'exists'. Located at position 1 within expression: exists('conf/${{ matrix.release }}-${{ matrix.arch }}.txt') || "${{ matrix.release