lib/graphql/schema/build_from_definition.rb in graphql-1.8.11 vs lib/graphql/schema/build_from_definition.rb in graphql-1.8.12

@@ -111,10 +111,10 @@
 
           schema
         end
 
         NullResolveType = ->(type, obj, ctx) {
-          raise(NotImplementedError, "Generated Schema cannot use Interface or Union types for execution.")
+          raise(NotImplementedError, "Generated Schema cannot use Interface or Union types for execution. Implement resolve_type on your resolver.")
         }
 
         NullScalarCoerce = ->(val, _ctx) { val }
 
         def build_enum_type(enum_type_definition, type_resolver)