The access_token and credits attributes for the users database should be nullable=False , so we have to re-migrate this database.
Note: I think the reason we didn't do it the right way the first time was because we were running into a migration error. We're better off in the long run fixing that migration error rather than avoiding the error by fudging up the codebase.
Whoever picks this up will likely to have to deal with flask-migrate so I nominate @scan3ls for this issue, but it's also super low-priority right now. Just adding it to issues now before we forget.