Unreal plugin issues (crash)

My model crash Unreal when I am using the Unreal plugin (SketchfabUnrealPlugin-2-0-0).

Steps to reproduce:

  1. Create a new project in Unreal version (4.26.2)

  2. Load the asset with Sketchfab content manager.

  3. Drag the asset into the scene

  4. Save all and close the project

  5. Reopen the project and it crashes with:

Assertion failed: Owner->IsMeshDescriptionValid(0) [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/Engine/Private/StaticMesh.cpp] [Line: 2569] Bad MeshDescription on /Game/SmartSeparate_442_GRAY_METAL_0.Ducati Scrambler (ZeusCustom)

Yet, everything works fine if I am importing the Fbx file directly into Unreal.