Data Update Issue

Many teams do not have a manager, this is not normal. What am I doing wrong?

Edit: I converted them to fmf files through the editor. The problem was not fixed.

Edit: It was written in the forum that the data update for Fm 21 was opened by mistake, am I trying in vain?

Last Edit: Problem solved when using old data update.

Apologies our FM21 is very buggy, this usually happens around this year as we try and make a data update work across two versions (it never does). 

We will be removing the fm21 data update shortly.