While importing rigged character to unreal engine 5.3 crash sw after a long stuck! why?

Scenario: first i downloaded fbx character from Mixamo and imported to unreal [ import pop up came nothing cgnage clicked on import ] . then umreal stucks for long time .
Scenario 2: downloaded sample UE5 character from cascaduer and tried to import to UE5 s. but still same issue as above ,
Scenario 3: Mixamo character imported to blender and exported character from blender imported to UE5 still same issue
Any solution avalilable for this ? any existing fixes?

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