I bulk uploaded users into Odoo v15, deleted them and redid the operation again. It, unknown to me, created corresponding employee records for the users each time. I later, randomly selected the duplicate employees without considering which ones were linked to users, and archived these. I am trying to unarchive just the employee records that are linked to users and I get the error below:

PS: I am using the administrator account with full access rights. None of the users is multi-company rule set on them