Metahumans attach error in packaged project

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My metahuman in the unreal engine (4.27) preview works correctly, while when I open the exe from the packaged project the lower part of the torso is not attached
if you want I can sand some photos
ps sorry for any mistakes but I’m Italian and also I’ve just started using unreal

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I view this tutorial: Using a MetaHuman as a Third-Person Character in Unreal Engine 4 | MetaHuman Creator Documentation

This is some photo…

Face Component:

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Feet Component:

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Legs Component:

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Torso Component:

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This is the result on the exe: