DatasmithRuntime plugin crashes when unload

Hi, everyone:

I’m using datasmith runtime plugin to load my scene in runtime and it works pretty well, except this plugin always leads to a editor crash when end play as well as in shipping builds.

Here is the crash log:

Ensure condition failed: AssetData.Object.IsValid() || TextureDataList.Remove(ElementId) > 0 [File:D:/Build/++UE4/Sync/Engine/Plugins/Experimental/Enterprise/DatasmithRuntime/Source/Private/SceneImporter.cpp] [Line: 1236] Stack: 0x00007ffa6592ce09 UE4Editor-DatasmithRuntime.dll!UnknownFunction [] 0x00007ffa6592b443 UE4Editor-DatasmithRuntime.dll!UnknownFunction [] 0x00007ffa658b6524 UE4Editor-DatasmithRuntime.dll!UnknownFunction [] 0x00007ffa658b9461 UE4Editor-DatasmithRuntime.dll!UnknownFunction [] 0x00007ffa65887d72 UE4Editor-DatasmithRuntime.dll!UnknownFunction [] 0x00007ffa658badca UE4Editor-DatasmithRuntime.dll!UnknownFunction [] 0x00007ffa65888ed5 UE4Editor-DatasmithRuntime.dll!UnknownFunction [] 0x00007ffa658c20dc UE4Editor-DatasmithRuntime.dll!UnknownFunction [] 0x00007ffa8a420144 UE4Editor-Engine.dll!UnknownFunction [] 0x00007ffa8ad1ea07 UE4Editor-Engine.dll!UnknownFunction [] 0x00007ffa8a41f35a UE4Editor-Engine.dll!UnknownFunction [] 0x00007ffa8e321894 UE4Editor-CoreUObject.dll!UnknownFunction [] 0x00007ffa8e5df23b UE4Editor-CoreUObject.dll!UnknownFunction [] 0x00007ffa8e602433 UE4Editor-CoreUObject.dll!UnknownFunction [] 0x00007ffa8e604c4d UE4Editor-CoreUObject.dll!UnknownFunction [] 0x00007ffa8e5d32da UE4Editor-CoreUObject.dll!UnknownFunction [] 0x00007ffa8e60483c UE4Editor-CoreUObject.dll!UnknownFunction [] 0x00007ffa8e604c4d UE4Editor-CoreUObject.dll!UnknownFunction [] 0x00007ffa8e604044 UE4Editor-CoreUObject.dll!UnknownFunction [] 0x00007ffa8e321894 UE4Editor-CoreUObject.dll!UnknownFunction [] 0x00007ffa8e603b63 UE4Editor-CoreUObject.dll!UnknownFunction [] 0x00007ffa87800f5b UE4Editor-UMG.dll!UnknownFunction [] 0x00007ffa8792a6a7 UE4Editor-UMG.dll!UnknownFunction [] 0x00007ffa87888ff3 UE4Editor-UMG.dll!UnknownFunction [] 0x00007ffa9bb4a6fe UE4Editor-Slate.dll!UnknownFunction [] 0x00007ffa9bb6280e UE4Editor-Slate.dll!UnknownFunction [] 0x00007ffa9b9b421e UE4Editor-Slate.dll!UnknownFunction [] 0x00007ffa9ba2e104 UE4Editor-Slate.dll!UnknownFunction [] 0x00007ffa9ba170

I can’t look deeper into this error because all of those functions are unknown, please help, thank you so much!