[Koha] GoogleOpenId

have been trying unsuccessfully to enable GoogleOpenID authethication. I followed the steps described in the documentation but i keep getting the same error. *Error: invalid_request* Invalid parameter value for redirect_uri: Missing scheme: /cgi-bin/koha/svc/auth/googleopenidconnect I have the ID and Secret available from Google Develpment Console, i do have 2 other projects that work ok, except KOHA. Could anyone direct me ? Thank you!