NC Desktop Client 3.0.1 reports a conflict

I am running NC Desktop Client 3.0.1 on macOS 10.13.6. At a synchro the menuelet became yellow with an exclamation mark. When I click on the menuelet the panel opens but the appearing text is shortened. Therefore I cannot read, what the reason is. When I am chosing settings there is a yellow bar below the sync job entry. At mousover a handle appears as it would be a link, but there is no link. So, where can I see, what conflict has appeared and how to solve it?

Could you please post a screenshot?

The client has log functions as well. See