React: 警告：「同じキーを持つ2人の子供に遭遇しました」

以下のようなものの完全な呼び出しスタック：

warning.js：45警告：flattenChildren（...）：同じキー.$outbox81持つ2人の子供に遭遇しました。 子キーは一意である必要があります。 2人の子供がキーを共有する場合、最初の子供のみが使用されます。 ：44_reconcilerUpdateChildren @ ReactMultiChild.js：212_updateChildren @ ReactMultiChild.js：351updateChildren @ ReactMultiChild.js：326_updateDOMChildren @ ReactDOMComponent.js：871updateComponent @ ReactDOMComponent.js：700receiveComponent @ ReactDOMComponent.js：645receiveComponent @ ReactReconciler.js：87obj。 backend.js：8386_updateRenderedComponent @ ReactCompositeComponent.js：562_performComponentUpdate @ ReactCompositeComponent.js：544updateComponent @ ReactCompositeComponent.js：473ReactCompositeComponent_updateComponent @ ReactPerf.js：66receiveComponent @ ReactCompositeComponent.js：405receiveComponent @ ReactReconciler.js on）@ backend.js：8386updateChildren @ ReactChildReconciler.js：84_reconcilerUpdateChildren @ ReactMultiChild.js：216_updateChildren @ ReactMultiChild.js：351updateChildren @ ReactMultiChild.js：326_updateDOMChildren @ ReactDOMComponent.js：871updateComponent @ ReactDOMComponent.js：700receiveComponent @ @ ReactReconciler.js：87obj。（匿名関数）@ backend.js：8386updateChildren @ ReactChildReconciler.js：84_reconcilerUpdateChildren @ ReactMultiChild.js：216_updateChildren @ ReactMultiChild.js：351updateChildren @ ReactMultiChild.js：326_updateDOMChildren @ ReactDOMComponent.js js：700receiveComponent @ ReactDOMComponent.js：645receiveComponent @ ReactReconciler.js：87obj。（匿名関数）@ backend.js：8386_updateRenderedComponent @ ReactCompositeComponent.js：562_performComponentUpdate @ ReactCompositeComponent.js：544updateComponent @ ReactCompositeComponent.js：473ReactCompositeComponent_ f.js：66receiveComponent @ ReactCompositeComponent.js：405receiveComponent @ ReactReconciler.js：87obj。（匿名関数）@ backend.js：8386updateChildren @ ReactChildReconciler.js：84_reconcilerUpdateChildren @ ReactMultiChild.js：216_updateChildren @ ReactMultiChild.js：351updateChildren @ React ：326_updateDOMChildren @ ReactDOMComponent.js：871updateComponent @ ReactDOMComponent.js：700receiveComponent @ ReactDOMComponent.js：645receiveComponent @ ReactReconciler.js：87obj。（匿名関数）@ backend.js：8386updateChildren @ ReactChildReconciler.js：84_reconcilerUpdateChildren @ ReactMultiChild ReactMultiChild.js：351updateChildren @ ReactMultiChild.js：326_updateDOMChildren @ ReactDOMComponent.js：871updateComponent @ ReactDOMComponent.js：700receiveComponent @ ReactDOMComponent.js：645receiveComponent @ ReactReconciler.js：87obj。（匿名関数）@ backend.js：8386_updateRenderedComponent @ ReactCompo ：562_performComponentUpdate @ ReactCompos iteComponent.js：544updateComponent @ ReactCompositeComponent.js：473ReactCompositeComponent_updateComponent @ ReactPerf.js：66receiveComponent @ ReactCompositeComponent.js：405receiveComponent @ ReactReconciler.js：87obj。（匿名関数）@ backend.js：8386updateChildren @ ReactChildReconciler.js：84_re ：216_updateChildren @ ReactMultiChild.js：351updateChildren @ ReactMultiChild.js：326_updateDOMChildren @ ReactDOMComponent.js：871updateComponent @ ReactDOMComponent.js：700receiveComponent @ ReactDOMComponent.js：645receiveComponent @ ReactReconciler.js：87obj。（匿名関数）@ backend.js：8386updateChildren @ ReactChildReconciler.js：84_reconcilerUpdateChildren @ ReactMultiChild.js：216_updateChildren @ ReactMultiChild.js：351updateChildren @ ReactMultiChild.js：326_updateDOMChildren @ ReactDOMComponent.js：871updateComponent @ ReactDOMComponent.js：700receiveComponent @ ReactDOMComponent.js：645receiveComponent @ ReactRecon func ）@ backend.js：8386_updateRenderedComponent @ ReactCompositeComponent.js：562_performComponentUpdate @ ReactCompositeComponent.js：544updateComponent @ ReactCompositeComponent.js：473ReactCompositeComponent_updateComponent @ ReactPerf.js：66receiveComponent @ ReactCompositeComponent.js：405receiveComponent @ ReactReconciler backend.js：8386_updateRenderedComponent @ ReactCompositeComponent.js：562_performComponentUpdate @ ReactCompositeComponent.js：544updateComponent @ ReactCompositeComponent.js：473ReactCompositeComponent_updateComponent @ ReactPerf.js：66receiveComponent @ ReactCompositeComponent.js：405receiveComponent @ ReactReconciler.js：87 ：8386updateChildren @ ReactChildReconciler.js：84_reconcilerUpdateChildren @ ReactMultiChild.js：216_updateChildren @ ReactMultiChild.js：351updateChildren @ ReactMultiChild.js：326_updateDOMChildren @ ReactDOMComponent.js：871updateComponent @ ReactDOMComponent.js：700receiveComponent @ R eactDOMComponent.js：645receiveComponent @ ReactReconciler.js：87obj。（匿名関数）@ backend.js：8386_updateRenderedComponent @ ReactCompositeComponent.js：562_performComponentUpdate @ ReactCompositeComponent.js：544updateComponent @ ReactCompositeComponent.js：473ReactCompositeComponent_updateComponent @ ReactPerf ：405receiveComponent @ ReactReconciler.js：87obj。（匿名関数）@ backend.js：8386_updateRenderedComponent @ ReactCompositeComponent.js：562_performComponentUpdate @ ReactCompositeComponent.js：544updateComponent @ ReactCompositeComponent.js：473ReactCompositeComponent_updateComponent @ ReactPerf.js：66perform ReactReconciler.js：102obj。（匿名関数）@ backend.js：8386runBatchedUpdates @ ReactUpdates.js：129perform @ Transaction.js：136perform @ Transaction.js：136perform @ ReactUpdates.js：86flushBatchedUpdates @ ReactUpdates.js：147ReactUpdates_flu shBatchedUpdates @ ReactPerf.js：66closeAll @ Transaction.js：202perform @ Transaction.js：149batchedUpdates @ ReactDefaultBatchingStrategy.js：62enqueueUpdate @ ReactUpdates.js：176enqueueUpdate @ ReactUpdateQueue.js：24enqueueSetState @ ReactUpdateQueue.js：190ReactComponent.setState @ ReactComponent.js 65handleChange @ connect.js：301dispatch @ createStore.js：186（匿名関数）@ api.js：91（匿名関数）@ index.js：15（匿名関数）@ middleware.js：22（匿名関数）@bindActionCreators。 js：7hide @ index.js：743handleDocumentClick @ index.js：519
warning.js：45警告：flattenChildren（...）：同じキー.$outbox80持つ2人の子供に遭遇しました。 子キーは一意である必要があります。 2人の子供がキーを共有する場合、最初の子供のみが使用されます。 ：44_reconcilerUpdateChildren @ ReactMultiChild.js：212_updateChildren @ ReactMultiChild.js：351updateChildren @ ReactMultiChild.js：326_updateDOMChildren @ ReactDOMComponent.js：871updateComponent @ ReactDOMComponent.js：700receiveComponent @ ReactDOMComponent.js：645receiveComponent @ ReactReconciler.js：87obj。 backend.js：8386_updateRenderedComponent @ ReactCompositeComponent.js：562_performComponentUpdate @ ReactCompositeComponent.js：544updateComponent @ ReactCompositeComponent.js：473ReactCompositeComponent_updateComponent @ ReactPerf.js：66receiveComponent @ ReactCompositeComponent.js：405receiveComponent @ ReactReconciler.js on）@ backend.js：8386updateChildren @ ReactChildReconciler.js：84_reconcilerUpdateChildren @ ReactMultiChild.js：216_updateChildren @ ReactMultiChild.js：351updateChildren @ ReactMultiChild.js：326_updateDOMChildren @ ReactDOMComponent.js：871updateComponent @ ReactDOMComponent.js：700receiveComponent @ @ ReactReconciler.js：87obj。（匿名関数）@ backend.js：8386updateChildren @ ReactChildReconciler.js：84_reconcilerUpdateChildren @ ReactMultiChild.js：216_updateChildren @ ReactMultiChild.js：351updateChildren @ ReactMultiChild.js：326_updateDOMChildren @ ReactDOMComponent.js js：700receiveComponent @ ReactDOMComponent.js：645receiveComponent @ ReactReconciler.js：87obj。（匿名関数）@ backend.js：8386_updateRenderedComponent @ ReactCompositeComponent.js：562_performComponentUpdate @ ReactCompositeComponent.js：544updateComponent @ ReactCompositeComponent.js：473ReactCompositeComponent_ f.js：66receiveComponent @ ReactCompositeComponent.js：405receiveComponent @ ReactReconciler.js：87obj。（匿名関数）@ backend.js：8386updateChildren @ ReactChildReconciler.js：84_reconcilerUpdateChildren @ ReactMultiChild.js：216_updateChildren @ ReactMultiChild.js：351updateChildren @ React ：326_updateDOMChildren @ ReactDOMComponent.js：871updateComponent @ ReactDOMComponent.js：700receiveComponent @ ReactDOMComponent.js：645receiveComponent @ ReactReconciler.js：87obj。（匿名関数）@ backend.js：8386updateChildren @ ReactChildReconciler.js：84_reconcilerUpdateChildren @ ReactMultiChild ReactMultiChild.js：351updateChildren @ ReactMultiChild.js：326_updateDOMChildren @ ReactDOMComponent.js：871updateComponent @ ReactDOMComponent.js：700receiveComponent @ ReactDOMComponent.js：645receiveComponent @ ReactReconciler.js：87obj。（匿名関数）@ backend.js：8386_updateRenderedComponent @ ReactCompo ：562_performComponentUpdate @ ReactCompos iteComponent.js：544updateComponent @ ReactCompositeComponent.js：473ReactCompositeComponent_updateComponent @ ReactPerf.js：66receiveComponent @ ReactCompositeComponent.js：405receiveComponent @ ReactReconciler.js：87obj。（匿名関数）@ backend.js：8386updateChildren @ ReactChildReconciler.js：84_re ：216_updateChildren @ ReactMultiChild.js：351updateChildren @ ReactMultiChild.js：326_updateDOMChildren @ ReactDOMComponent.js：871updateComponent @ ReactDOMComponent.js：700receiveComponent @ ReactDOMComponent.js：645receiveComponent @ ReactReconciler.js：87obj。（匿名関数）@ backend.js：8386updateChildren @ ReactChildReconciler.js：84_reconcilerUpdateChildren @ ReactMultiChild.js：216_updateChildren @ ReactMultiChild.js：351updateChildren @ ReactMultiChild.js：326_updateDOMChildren @ ReactDOMComponent.js：871updateComponent @ ReactDOMComponent.js：700receiveComponent @ ReactDOMComponent.js：645receiveComponent @ ReactRe func ）@ backend.js：8386_updateRenderedComponent @ ReactCompositeComponent.js：562_performComponentUpdate @ ReactCompositeComponent.js：544updateComponent @ ReactCompositeComponent.js：473ReactCompositeComponent_updateComponent @ ReactPerf.js：66receiveComponent @ ReactCompositeComponent.js：405receiveComponent @ ReactReconciler backend.js：8386_updateRenderedComponent @ ReactCompositeComponent.js：562_performComponentUpdate @ ReactCompositeComponent.js：544updateComponent @ ReactCompositeComponent.js：473ReactCompositeComponent_updateComponent @ ReactPerf.js：66receiveComponent @ ReactCompositeComponent.js：405receiveComponent @ ReactReconciler.js：87 ：8386updateChildren @ ReactChildReconciler.js：84_reconcilerUpdateChildren @ ReactMultiChild.js：216_updateChildren @ ReactMultiChild.js：351updateChildren @ ReactMultiChild.js：326_updateDOMChildren @ ReactDOMComponent.js：871updateComponent @ ReactDOMComponent.js：700receiveComponent @ R eactDOMComponent.js：645receiveComponent @ ReactReconciler.js：87obj。（匿名関数）@ backend.js：8386_updateRenderedComponent @ ReactCompositeComponent.js：562_performComponentUpdate @ ReactCompositeComponent.js：544updateComponent @ ReactCompositeComponent.js：473ReactCompositeComponent_updateComponent @ ReactPerf ：405receiveComponent @ ReactReconciler.js：87obj。（匿名関数）@ backend.js：8386_updateRenderedComponent @ ReactCompositeComponent.js：562_performComponentUpdate @ ReactCompositeComponent.js：544updateComponent @ ReactCompositeComponent.js：473ReactCompositeComponent_updateComponent @ ReactPerf.js：66perform ReactReconciler.js：102obj。（匿名関数）@ backend.js：8386runBatchedUpdates @ ReactUpdates.js：129perform @ Transaction.js：136perform @ Transaction.js：136perform @ ReactUpdates.js：86flushBatchedUpdates @ ReactUpdates.js：147ReactUpdates_flu shBatchedUpdates @ ReactPerf.js：66closeAll @ Transaction.js：202perform @ Transaction.js：149batchedUpdates @ ReactDefaultBatchingStrategy.js：62enqueueUpdate @ ReactUpdates.js：176enqueueUpdate @ ReactUpdateQueue.js：24enqueueSetState @ ReactUpdateQueue.js：190ReactComponent.setState @ ReactComponent.js 65handleChange @ connect.js：301dispatch @ createStore.js：186（匿名関数）@ api.js：91（匿名関数）@ index.js：15（匿名関数）@ middleware.js：22（匿名関数）@bindActionCreators。 js：7hide @ index.js：743handleDocumentClick @ index.js：519

すみません、それは私の間違いです。

onReachEndメソッドフラットリストを呼び出すと同じ警告が表示されるので、実際の問題を教えてください。