Upgrade from 10.01 to 11.0.12 ModuleNotFoundError: No module named 'seafes'

After I upgraded and tried to start seahub.sh I got the webpage error Internal Server Error.

After I changed seahub to not run as a daemon, I noticed that after I started it I was getting a bunch of errors and all ending with ModuleNotFoundError: No module named 'seafes'

I can post the full log if needed, but how do I fix this error? I made sure all the required Python packages were updated.

I got seahub to start again, by changing my seafevents.conf to

[INDEX FILES]
enabled = false
interval = 10m

I am guessing I want my files indexed, so I need to go track down while the indexing service is broken.