error: deno task couldn't find deno.json(c) on GitHub Action

name: Chạy định kỳ
on: 
  workflow_dispatch:
  schedule:
    # - cron: "0 0 * * 0"
    - cron: "*/5 * * * *"
jobs:
  cron:
    runs-on: ubuntu-latest
    steps:
      - uses: denoland/setup-deno@v2
        with:
          deno-version: vx.x.x
      - name: deno task start
        run: deno task start

error: deno task couldn't find deno.json(c). See https://docs.deno.com/go/config
Error: Process completed with exit code 1.