Failing on PRs when there is nothing for Vale to check

[tjperry07]

Check for existing issues

• Completed

Environment

This literally just started. Vale has started failing on PRs where there isn't anything for it to check. Like if I delete some images and make a PR or update the redirects file, it will fail.

name: Vale Linter
on:
  pull_request:
  workflow_dispatch:

jobs:
  vale:
    name: vale action
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Get Changed Files
        id: get_changed_files
        uses: tj-actions/changed-files@v44
        with:
          files: |
            **.md
          separator: ","
      - name: Print Changed Markdown Files
        run: |
          echo "Changed markdown files: ${{ steps.get_changed_files.outputs.all_changed_files }}"

      - name: Vale Action
        uses: errata-ai/vale-action@reviewdog
        with:
          files: ${{ steps.get_changed_files.outputs.all_changed_files }}
          separator: ","
          filter_mode: diff_context
          reporter: github-pr-review
          fail_on_error: true
          token: ${{secrets.GITHUB_TOKEN}}

Run errata-ai/vale-action@reviewdog
  with:
    separator: ,
    filter_mode: diff_context
    reporter: github-pr-review
    fail_on_error: true
    token: ***
    version: latest
    debug: false
    level: error
Installing Vale version 'latest' ...
/usr/bin/tar xz --overwrite --warning=no-unknown-keyword --overwrite -C /home/runner -f /home/runner/work/_temp/[2](https://github.com/Coalesce-Software-Inc/public-product-documentation/actions/runs/13059677326/job/36439289183?pr=150#step:5:2)30370cd-e46f-4ba7-8bd7-d296e29c408d
Installed version '[3](https://github.com/Coalesce-Software-Inc/public-product-documentation/actions/runs/13059677326/job/36439289183?pr=150#step:5:3).9.4' into '/home/runner/vale'.
Installing ReviewDog version '0.17.0' ...
/usr/bin/tar xz --overwrite --warning=no-unknown-keyword --overwrite -C /home/runner -f /home/runner/work/_temp/bf1176c7-ed97-[4](https://github.com/Coalesce-Software-Inc/public-product-documentation/actions/runs/13059677326/job/36439289183?pr=150#step:5:4)5a8-a2d0-8bcac0e9dd25
Installed reviewdog from 'https://github.com/reviewdog/reviewdog/releases/download/v0.17.0/reviewdog_0.17.0_Linux_x8[6](https://github.com/Coalesce-Software-Inc/public-product-documentation/actions/runs/13059677326/job/36439289183?pr=150#step:5:6)_64.tar.gz' into '/home/runner/reviewdog'.
/home/runner/vale sync

                                                                                
 SUCCESS  Synced 0 package(s) to '/home/runner/work/public-product-documentation/public-product-documentation/.github/styles'.
Running vale...
  /home/runner/vale --output=/home/runner/work/_actions/errata-ai/vale-action/reviewdog/lib/rdjsonl.tmpl 
  lstat : no such file or directory
Error: Vale and reviewdog exited with status code: 2

Describe the bug / provide steps to reproduce it

Make a PR, but don't make any changes to the /docs or any folder that Vale is supposed to check. Then merge.

[tjperry07]

I was able to fix it by adding the check

      - if: steps.get_changed_files.outputs.all_changed_files != ''
        uses: errata-ai/[email protected]
        with:
          files: ${{ steps.get_changed_files.outputs.all_changed_files }}
          separator: ","
          filter_mode: diff_context
          reporter: github-pr-review
          fail_on_error: true
          token: ${{ secrets.GITHUB_TOKEN }}