Problem running action: "Received event from workflow_dispatch, but received no inputs" error message

[AbianG]

I'm trying to run the action as part of a test pipeline (to see if it helps with a project) but the problem is that, following the readme examples, I cannot make it run correctly. The test pipeline code is:

name: "xml-lint-TEST"

on:
  pull_request:
    branches:
      - master
      - dev
  # Allows you to run this workflow manually from the Actions tab
  workflow_dispatch:

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
    - name: Checkout
      uses: actions/checkout@v2

    - name: Detect changed xml files
      uses: trilom/file-changes-action@v1.2.3
      with:
        githubToken: ${{ secrets.GITHUB_TOKEN }}
        plaintext: true
    - name: Echo file changes
      run: | 
        echo Changed files: ${{ steps.get_file_changes.outputs.files }} 

Problem is, it fails with the following error:

Warning: Unexpected input(s) 'plaintext', valid inputs are ['githubRepo', 'githubToken', 'pushBefore', 'pushAfter', 'prNumber', 'output', 'fileOutput']
Run trilom/file-changes-action@v1.2.3
(node:2611) UnhandledPromiseRejectionWarning: Error: {"error":"500/inferInput Error","from":"inferInput","message":"Received event from workflow_dispatch, but received no inputs. {event_name:workflow_dispatch, pr: NaN, before:false, after:false}","payload":""}
    at run (/home/runner/work/_actions/trilom/file-changes-action/v1.2.3/dist/index.js:1:19989)
    at Object.198 (/home/runner/work/_actions/trilom/file-changes-action/v1.2.3/dist/index.js:1:20067)
    at __webpack_require__ (/home/runner/work/_actions/trilom/file-changes-action/v1.2.3/dist/index.js:1:154)
    at startup (/home/runner/work/_actions/trilom/file-changes-action/v1.2.3/dist/index.js:1:291)
    at module.exports.0 (/home/runner/work/_actions/trilom/file-changes-action/v1.2.3/dist/index.js:1:323)
    at Object.<anonymous> (/home/runner/work/_actions/trilom/file-changes-action/v1.2.3/dist/index.js:1:333)
    at Module._compile (internal/modules/cjs/loader.js:959:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:995:10)
    at Module.load (internal/modules/cjs/loader.js:815:32)
    at Function.Module._load (internal/modules/cjs/loader.js:727:14)
(node:2611) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:2611) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
Error: There was an issue inferring inputs to the action.
Exception: {
  "error": "500/inferInput Error",
  "from": "inferInput",
  "message": "Received event from workflow_dispatch, but received no inputs. {event_name:workflow_dispatch, pr: NaN, before:false, after:false}",
  "payload": ""
}

I do not understand fully the error, but fearing it might have something to do with the plaintext: true statement, I removed it along with githubToken: ${{ secrets.GITHUB_TOKEN }} (all under the with: really) and reran it, still got an error about input (this time about infering input)

  with:
    githubToken: ***
    output: json
    fileOutput: json
Error: There was an issue inferring inputs to the action.
Exception: {
  "error": "500/inferInput Error",
  "from": "inferInput",
  "message": "Received event from workflow_dispatch, but received no inputs. {event_name:workflow_dispatch, pr: NaN, before:false, after:false}",
  "payload": ""
}
(node:2570) UnhandledPromiseRejectionWarning: Error: {"error":"500/inferInput Error","from":"inferInput","message":"Received event from workflow_dispatch, but received no inputs. {event_name:workflow_dispatch, pr: NaN, before:false, after:false}","payload":""}
    at run (/home/runner/work/_actions/trilom/file-changes-action/v1.2.3/dist/index.js:1:19989)
    at Object.198 (/home/runner/work/_actions/trilom/file-changes-action/v1.2.3/dist/index.js:1:20067)
    at __webpack_require__ (/home/runner/work/_actions/trilom/file-changes-action/v1.2.3/dist/index.js:1:154)
    at startup (/home/runner/work/_actions/trilom/file-changes-action/v1.2.3/dist/index.js:1:291)
    at module.exports.0 (/home/runner/work/_actions/trilom/file-changes-action/v1.2.3/dist/index.js:1:323)
    at Object.<anonymous> (/home/runner/work/_actions/trilom/file-changes-action/v1.2.3/dist/index.js:1:333)
    at Module._compile (internal/modules/cjs/loader.js:959:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:995:10)
    at Module.load (internal/modules/cjs/loader.js:815:32)
    at Function.Module._load (internal/modules/cjs/loader.js:727:14)
(node:2570) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:2570) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

I am not sure of where should I start, as the pipeline is extremely simple at this point and based on the documentation. Any help will be welcome.

[rob-metalinkage]

Seems to be a bug if workflow_dispatch used to trigger this? I have same problem.

[808sAndBR]

I was able to overcome this issue by passing the PR manually using https://github.com/marketplace/actions/find-pull-request . I think it is because workflow_dispatch is set on branches not PRs (I ended up abandoning this approach anyways since workflow dispatch could not update the PR of its test status anyways :( )

      - name: Find Pull Request
        uses: juliangruber/find-pull-request-action@v1
        id: find-pull-request
        with:
          branch: ${{github.ref_name}}

      - name: Get changed files
        id: get_file_changes
        uses: trilom/file-changes-action@v1.2.4
        with:
          output: ' '
          prNumber: ${{ steps.find-pull-request.outputs.number }}