Import failure I can't fix

yeah pretty sad
i keep getting this message when i import a fbx model how do i fix it?

It seems a parameter is missing and it has to do something with a mesh’s name. Could you confirm if any of your meshes contain any bad-characters in their name?

bad characters like bad words? if so i’ll check

Not bad words, I mean that could also be a possible cause but I meant un-ordinary characters such as “%”, “@” or even empty characters " "

how do i find one of those characters