Some Objects won't package

Hello, Sorry if this a duplicate, but I still can’t find an answer.
I have a big scene, hundreds of objects, but only 5 or 6 of them won’t package!
I made a small scene to test them and they still won’t package… they just are not there… here’s a picture from the engine

and here’s a picture after packaging

I’ve been importing, exporting renaming objects do them again… they just don’t want to appear!
stuck with this issue for days :confused:

I’ll upload the objects if needed