Error: Resource not accessible by integration

[sideeffffect]

With

name: Auto approve

on:
  pull_request

jobs:
  auto-approve:
    runs-on: ubuntu-latest
    steps:
      - uses: hmarr/auto-approve-action@v2.0.0
        if: github.actor == 'scala-steward'
        with:
          github-token: "${{ secrets.GITHUB_TOKEN }}"

we get
https://github.com/zio/zio-prelude/pull/301/checks?check_run_id=1146830048#step:2:4

2020-09-21T23:47:05.5371413Z ##[section]Starting: Request a runner to run this job
2020-09-21T23:47:05.8573243Z Can't find any online and idle self-hosted runner in current repository that matches the required labels: 'ubuntu-latest'
2020-09-21T23:47:05.8573769Z Can't find any online and idle self-hosted runner in current repository's account/organization that matches the required labels: 'ubuntu-latest'
2020-09-21T23:47:05.8574756Z Found online and idle hosted runner in current repository's account/organization that matches the required labels: 'ubuntu-latest'
2020-09-21T23:47:05.9896241Z ##[section]Finishing: Request a runner to run this job
2020-09-21T23:47:13.3495011Z Current runner version: '2.273.2'
2020-09-21T23:47:13.3526627Z ##[group]Operating System
2020-09-21T23:47:13.3527466Z Ubuntu
2020-09-21T23:47:13.3527798Z 18.04.5
2020-09-21T23:47:13.3528109Z LTS
2020-09-21T23:47:13.3528451Z ##[endgroup]
2020-09-21T23:47:13.3528872Z ##[group]Virtual Environment
2020-09-21T23:47:13.3529366Z Environment: ubuntu-18.04
2020-09-21T23:47:13.3529732Z Version: 20200914.1
2020-09-21T23:47:13.3530577Z Included Software: https://github.com/actions/virtual-environments/blob/ubuntu18/20200914.1/images/linux/Ubuntu1804-README.md
2020-09-21T23:47:13.3531497Z ##[endgroup]
2020-09-21T23:47:13.3532662Z Prepare workflow directory
2020-09-21T23:47:13.3715625Z Prepare all required actions
2020-09-21T23:47:13.3729431Z Download action repository 'hmarr/auto-approve-action@v2.0.0'
2020-09-21T23:47:16.0791854Z ##[group]Run hmarr/auto-approve-action@v2.0.0
2020-09-21T23:47:16.0792488Z with:
2020-09-21T23:47:16.0793409Z   github-token: ***
2020-09-21T23:47:16.0793769Z ##[endgroup]
2020-09-21T23:47:16.9667270Z ##[error]Resource not accessible by integration
2020-09-21T23:47:16.9705943Z Cleaning up orphan processes

Does anybody have any idea what's going on?
Thank you

[hmarr]

Looks like the GITHUB_TOKEN in your secrets doesn't have permission to approve PRs. Closing this out as it's a configuration issue rather than a problem with the action.

[sideeffffect]

But wouldn't that be a bit weird, given that GITHUB_TOKEN is something automatically created by/for GitHub Actions?
@hmarr could you please point me to where I could adjust the permissions for GITHUB_TOKEN to enable auto-approve?