Graph is linked to external private object

Good day.
My problem is in saving project. When i am trying to save my project i get massege Log “Can’t save …/…/…/…/…/…/Users/proje/OneDrive/Документы/Unreal Projects/House/Saved/Autosaves/Game/Main_Auto1.umap: Graph is linked to external private object MaterialInstanceEditorOnlyData /Game/House/House.House_C:House-3DView-_3D__Decoration_exterior_GEN_VARIABLE.MaterialInstanceDynamic_0.MaterialInstanceDynamic_0EditorOnlyData (EditorOnlyData)”
What can i do with this?