Please see the attached pictures.
If I do the updates, for Nextcloud I will encounter the same problem as @PCXLan.es .
After that I will do as @dnutan said and I will have Nextcloud functionally.
EDIT:
Of course, after that, the Nextcloud update will be there again, in the Software Center!
But maybe tomorrow we will have other updates, including the bad for Nextcloud, and we will start from the beginning: all updates, remove Nextcloud, install Nextcloud …
If we know that one or many updates can make trouble, for now, we can not select which updates are good and which updates are bad.
I think we should go back to this topic:
How to effectively communicate NethServer packages update?
( How to effectively communicate NethServer packages update? )
What do you think about that?