Having set up the secret CODECOV_TOKEN and passing it as ${{ secrets.CODECOV_TOKEN }} the upload fails with the message:

HTTP 400
Please provide the repository token to upload reports via `-t :repository-token`

This is both for v1 and v1.0.5 of codecov-action.

It seems that the action's environment variable CODECOV_TOKEN is not set properly or not recognized?

It should be mentioned that this has recently started failing, without changing the actions workflow otherwise, i.e., it used to work, but now throws this error.