When no labels is set, the following message is shown:
Adding labels []
could not add labels to N: HttpError: Invalid request.
No subschema in "anyOf" matched.
For 'anyOf/0', {"labels"=>[]} is not an array.
For 'anyOf/1', {"labels"=>[]} is not an array.
1 item required; only 0 were supplied.
When no labels is set, the following message is shown: