Mesh is not rendering, I can only see a background image (or nothing) FILE:
https://drive.google.com/file/d/1vdiEmix_mWpaWA5m_V9n8wBDobLRzSB2/view?usp=sharing
I'm doing motion tracking scene and the objects that I put in are not rendering. They are rendering in viewport and in other places but not in the final render. The shadow catcher seems to not work too. I didn't pack the background movie, it's too heavy.  
I tried:

most of this

realated question from
blenderartists


FIRST Image is how it should looks like (taken from viewport)
SECOND is how it looks
Turn off sequencer:

Once you have a movie clip in your VSE it will override rendering. If you want to composit your render on top of the footage, you need to use the compositor. Don't ask me why it's not off by default.