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当我尝试从 markerClusterGroup 中删除图层时,在 removeLayer 方法中出现错误“this._featureGroup.hasLayer is not a function”。

clusters = L.markerClusterGroup()
clusters.hasLayer(layer));//returns true
clusters.removeLayer(layer);//cause an error "this._featureGroup.hasLayer is not a function"

什么可能导致这样的错误?

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