Mesh error when import to Sketchfab

Hello friends, so recently I tried to upload my animated character model fbx that have multiple animation clips into Sketchfab and it seems I’ve been running into a problem…
The mesh that I import to Sketchfab become stretched like it has wrong skinning value while it seems to be fine when I check it inside Maya.

Here is the mesh in Maya
image

and here is how it look like when I had put it inside Sketchfab
image

Thank you

I don’t know much about animation in Maya, but maybe this help article will give you some ideas on what to check: