51 "Id not found in Layout" errors but my app works

I’m doing the multipage hack I found somewhere on this site with app.py, layout.py, callbacks.py which contains a def register_callbacks(app) plus using dcc.Location.

Everything seems to work although sometimes it gets a bit clunky. No other errors show so I’m wondering is this a Dash issue?

Screenshot with errors hidden:

My code: https://github.com/nyck33/bio_pam_blosum