Importing a model not working

so i am trying to import a model i made into roblox studio but it keeps giving me this same error for every part
image
is there a way to get this to work?

is there anyone that knows how to fix this?

Do you remember what your model was originally, or did you get a different version?

i model things on blender and i usually export an FBX and it used to work just fine but i tried to model a simple hat and it didn’t work.