Switzerland - my love from the first sight! A beautiful alpine country that offers something for everyone. From the stunning blue waters of the mountain lakes to the breathtaking mountain peaks of the Alps, skiing, hiking, climbing, and some of the world's best cheese and chocolate!
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.