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データを照会しようとするとこの長いエラーが発生します。これは有効なデータです(GraphQLiに対してテストされています)。どんな指導も大歓迎です!Apollo GraphQLエラー:エラー:ネットワークエラー:未定義のプロパティ 'slice'を読み取ることができません
Error: Network error: Cannot read property 'slice' of undefined
at new ApolloError (eval at ./node_modules/apollo-client/errors/ApolloError.js (main.js:914), <anonymous>:34:28)
at ObservableQuery.currentResult (eval at ./node_modules/apollo-client/core/ObservableQuery.js (main.js:826), <anonymous>:83:25)
at GraphQL.dataForChild (eval at ./node_modules/react-apollo/lib/graphql.js (main.js:2728), <anonymous>:339:62)
at GraphQL.render (eval at ./node_modules/react-apollo/lib/graphql.js (main.js:2728), <anonymous>:377:33)
at eval (eval at ./node_modules/react-dom/lib/ReactCompositeComponent.js (main.js:2984), <anonymous>:796:21)
at measureLifeCyclePerf (eval at ./node_modules/react-dom/lib/ReactCompositeComponent.js (main.js:2984), <anonymous>:75:12)
at ReactCompositeComponentWrapper._renderValidatedComponentWithoutOwnerOrContext (eval at ./node_modules/react-dom/lib/ReactCompositeComponent.js (main.js:2984), <anonymous>:795:25)
at ReactCompositeComponentWrapper._renderValidatedComponent (eval at ./node_modules/react-dom/lib/ReactCompositeComponent.js (main.js:2984), <anonymous>:822:32)
at ReactCompositeComponentWrapper._updateRenderedComponent (eval at ./node_modules/react-dom/lib/ReactCompositeComponent.js (main.js:2984), <anonymous>:746:36)
at ReactCompositeComponentWrapper._performComponentUpdate (eval at ./node_modules/react-dom/lib/ReactCompositeComponent.js (main.js:2984), <anonymous>:724:10)