Multiple failures when running exam:iterate using chrome headless

[hoIIer]

Hello, I just recently added some acceptance tests to my app and when running ember exam:iterate X I get:

Assertion Failed: You cannot use the same root element (BODY) multiple times in an Ember.Application

If I run ember exam or ember test all of my tests pass.
If I run ember exam --random baamzbk9l78 my acceptance tests fail with one error that looks mirage related Cannot read property 'createList' of undefined and other via adapter operation failed.

I wasn't sure if it was testem related but here is my testem file:

/* eslint-env node */
const config = {
  test_page: 'tests/index.html?hidepassed',
  disable_watching: true,
  launch_in_ci: [
    'Chrome',
  ],
  launch_in_dev: [
    'Chrome',
  ],
  browser_args: {
    Chrome: [
      '--headless',
      '--no-sandbox',
      '--remote-debugging-address=0.0.0.0',
      '--remote-debugging-port=9222',
      '--touch-events',
      '--user-data-dir=/data',
    ],
  },
};