CircleCI authentication failed

Hi, I am trying to set up the CircleCI orb and get this error:

Packaging source... OK
ERROR: authentication failed

Exited with code exit status 1
CircleCI received exit code 1

I already followed the steps at https://docsv2.convox.com/external-services/circleci and double-checked the CONVOX_DEPLOY_KEY variable.

My CircleCI configuration is similar to this one:

version: 2.1
orbs:
  convox: convox/orb@1.4.1
workflows:
  deploy:
    jobs:
      - convox/deploy:
          rack: my-org/testing-qa
          app: my-app

Any idea?

Were you able to figure this out? I am running into the same exact error.