Error on restore from command line (duplicate email)

[hosna]

I get this error:

EXCEPTION: psql failed: DETAIL:  Key (lower(email::text))=({REDACTED}@yahoo.com) is duplicated.

How can I fix it?

[hosna]

I think its somehow related to this one:

So many broken users due to corrupt database

I have a real issue with many of my users. The users can be seen in admin panel like this: [Screenshot from 2019-12-12 20-00-31] But when I try to reveal their email address, It wont show anything to me. And also their public profile gives a 404 error. As far as I see, all of these users are almost inactive (they are active in terms of activation but inactive in terms of activity in forum). So I think maybe its been caused by a broken automatic inactive user removal in the very long past.