Unable to exit / terminate CI

[poponuts]

I used the default yaml file to run load tests via CI (Note: This works fine when running on my local machine):

name: Main Workflow
on: [push]
jobs:
  build:
    name: Run k6 test
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Run k6 local test
        uses: grafana/k6-action@v0.3.1
        with:
          filename: api/test.js
          flags: --vus 50 --duration 1m --env HOST=staging --http-debug

However, it doesn't seem to terminate or even a graceful exit. It just continues running.
I added --http-debug to help with the logs but still unable to understand why its not working.

For context, some snippets of my script:
api/test.js

import { sleep, group, check } from 'k6';
import http from 'k6/http';

// parameterise environment-specific variables
const env = JSON.parse(open(`../config/${__ENV.HOST}.env.json`))
const baseUrl = env.baseUrl;
const accessToken = env.accessToken;

const query = 'query Session { user { id } }';
const headers = {
  'x-access-token': accessToken,
  'content-type': 'application/json',
};

export default function main() {
  group('session test', function () {
    const res = http.post(
      `${baseUrl}/_api/graphql`,
      JSON.stringify({ query: query }), {
        headers: headers,
      }
    )
    console.log(`response: ${res.body}`);

    check(res, {
      'status is 200': (res) => res.status === 200
    });
  })
};

config/staging.env.json

{
    "baseUrl": "https://my-test-site.com",
    "accessToken": "some-valid-token"
}