Bug in quest \"Cases of national importance\" (The Witcher 3: Wild Hunt)

Everything goes and works fine until the as put choice. To stand on the side of Dijkstra or Roche. I chose to side with Roche, killed all, including Dijkstra, but nothing happens, no cut scenes, no dialogues, the allies just get on Board all what to do?

Load an older save is not an option, it really isn't saved