Using XFCE , but that tool seems to be part of the normal Debian tool set.
I think the program is meant to allow the user to change the data such as office name and their contact info.
I don't mind the error, it is the fact it just says unknown error that makes it so unhelpful.
I think it is more the error is there, which makes the OS look messy, as new users will just see broken apps, us Linux vets see work in progress :)
I would argue the whole thing needs updating, so we have a e-mail and phone at perhaps mobile phone field.
But that would then involve updating the other tools but this is 2020 people kinda expect a mobile field.