Rest API data source configuration

I am using appgyver and firestore as a database. When i test Get collections in rest API I get this error code. I am not sure where to enter auth code or what the code is. When watching the tutorials, they are able to test without entering auth code. Pleas Help!!!

Error: JSON error response from server: {“error”:{“code”:401,“message”:“Request is missing required authentication credential. Expected OAuth 2 access token, login cookie or other valid authentication credential. See",“status”:“UNAUTHENTICATED”,“details”:[{"@type":“”,“reason”:“CREDENTIALS_MISSING”,“domain”:“”,“metadata”:{“method”:“google.firestore.admin.v1.FirestoreAdmin.GetField”,“service”:"”}}]}}.status: 401