Error well importing .fbx character

Good Day,
I’m new to Unreal Game Engine 4

when I import my character (.FBX file) unreal gives me this error:

Assertion failed: (Index >= 0) & (Index < ArrayNum) [File:D:\Build++UE4\Sync\Engine\Source\Runtime\Core\Public\Containers/Array.h] [Line: 614]
Array index out of bounds: 0 from an array of size 0

0x00007fff89e9a388 KERNELBASE.dll!UnknownFunction ]
0x00007fff02d9a9e6 UE4Editor-Core.dll!UnknownFunction ]
0x00007fff02d9de88 UE4Editor-Core.dll!UnknownFunction ]
0x00007fff02b52cbd UE4Editor-Core.dll!UnknownFunction ]
0x00007fff02adfd83 UE4Editor-Core.dll!UnknownFunction ]
0x00007fff02ae2100 UE4Editor-Core.dll!UnknownFunction ]
0x00007fff4eb93238 UE4Editor-MeshBuilder.dll!UnknownFunction ]
0x00007fff4eb8c36c UE4Editor-MeshBuilder.dll!UnknownFunction ]
0x00007fff4eb84779 UE4Editor-MeshBuilder.dll!UnknownFunction ]
0x00007fff4eb887b3 UE4Editor-MeshBuilder.dll!UnknownFunction ]
0x00007fff003bfe6d UE4Editor-UnrealEd.dll!UnknownFunction ]
0x00007fff00314b7d UE4Editor-UnrealEd.dll!UnknownFunction ]
0x00007fff002b4de4 UE4Editor-UnrealEd.dll!UnknownFunction ]
0x00007ffee69ea190 UE4Editor-AssetTools.dll!UnknownFunction ]
0x00007ffee69e76b1 UE4Editor-AssetTools.dll!UnknownFunction ]
0x00007fff0092933a UE4Editor-UnrealEd.dll!UnknownFunction ]
0x00007fff00910c9f UE4Editor-UnrealEd.dll!UnknownFunction ]
0x00007fff0488fed9 UE4Editor-Engine.dll!UnknownFunction ]
0x00007fff048c28ed UE4Editor-Engine.dll!UnknownFunction ]
0x00007fff00199d68 UE4Editor-UnrealEd.dll!UnknownFunction ]
0x00007fff009fdd66 UE4Editor-UnrealEd.dll!UnknownFunction ]
0x00007ff6629a7f62 UE4Editor.exe!UnknownFunction ]
0x00007ff6629bc3ec UE4Editor.exe!UnknownFunction ]
0x00007ff6629bc4ca UE4Editor.exe!UnknownFunction ]
0x00007ff6629cceae UE4Editor.exe!UnknownFunction ]
0x00007ff6629cfcbe UE4Editor.exe!UnknownFunction ]
0x00007fff8abc4034 KERNEL32.DLL!UnknownFunction ]
0x00007fff8cfc3691 ntdll.dll!UnknownFunction ]

If any knows how to fix please help

Hello!

Got same error, engine version 4.24.1.
The error is gone if you assign a material to your model before exporting to FBX. You can do this, for example, in Blender.

Hope this helps.