I am a world traveler but specialized in Patagonia, the place where I was born and where I have been organizing trips for independent travelers for more than 20 years.
Abstract type "TravelTips" must resolve to an Object type at runtime for field "Query.travelTipBySlug". Either the "TravelTips" type should provide a "resolveType" function or each possible type should provide an "isTypeOf" function.
