Personal Gateway Custom Connector Error

Hey Guys,

Just installed the personal gateway, as I know this supports custom connectors https://github.com/Microsoft/DataConnectors/tree/master/samples/TripPin/9-TestConnection which will allow me to have an automated refresh.

I've been using the Google PQGoogleSpreadsheet connector (https://www.skolenipowerbi.cz/l/google-drive-connector-kompletni-pruvodce/) to visualise Sheets data in Power BI, however when trying to setup Personal Gateway for this I get the following:

I'm able to sign-in fine but still get an error...any thoughts/suggestions?