Worldping Permission Denied error inserting API key

I have installed worldping via the grafana-cli tool and that worked ok, but when I insert my API key I get a permission denied error

I have admin permissions as far as I’m aware
I have generated API keys for all 4 permission levels admin -> viewer all fail
I am running grafana v5.2.1 in a docker container on AWS linux

have I missed a step?
any help appreciated, thanks

Changing my permissions to admin has resolved this issue.