Help please "The link_rewrite field is invalid" while trying to change the Home category

[Vanos]

Hello,

 I work in the Classic Theme.

I want to add a description to my 'Home' Category, like I have done with all other categories.

Trying to save my changes I get the "The link_rewrite field is invalid" error and am stuck.

I haven't done any advanced changes so I don't get where this suddenly came from.

The two required fields have values: Name = Home; Friendly URL = home

Also with values in these 2 fields only, I get the error message

Hope you can help. 

Thanks!  

Edited December 10, 2019 by Vanos
spelling (see edit history)

[NemoPS]

do you have other languages? there might be a blank field in the DB if so, have a look at ps_category_lang, the id_category should be 2 for Home