E11000 duplicate key & validate errors

Hi,

I am getting errors I was not getting just a few hours ago, and reverting my repo to a working stage is still giving me these errors. I am not sure what can be the issue.

This error, for example, I get when I attempt to create a user:

And I am also getting errors with validate issues for collection relationship fields, but there is no validation happening. I commented out all of them to test.

I reverted back to the initial version of the repo, 35 commits ago. I commented out all hooks, everything. The error still persists, I'm really not sure what is going on: