To work with GitHub GrpahQL API v4 you need Personal access token Get token. Without it, you will receive an alert in the application with the error 401 Unauthorized
After receiving the token, open GrpahQLService in Services folder and change:
configuration.httpAdditionalHeaders = ["Authorization": "bearer 1d6497df49f2afddedb9a8618d399ad110ce89e6"]with yours Personal access token instead 1d6497df49f2afddedb9a8618d399ad110ce89e6.