{“type”: “error”, “error”: {“message”: “Resource not found”, “detail”: "There is no API hosted at this URL.\n\nFor information about our API’s, please refer to the documentation at:
Then you have to click on the “Go to pull request” link on the right side, which will automatically install the addon. The reason is that the addon is not automatically installed for all workspaces. Note that you will only have to do that once for each workspace that you’re using.