I was playing as the Norse, took the first city and started on the sanctuary. A few turns later I took another city, and made it start producing another sanctuary. After that, I took 3 more cities in the south, and as before, built sanctuaries. The thing is, I took another city, but it didn't allow me to build a sanctuary (on the same enemy team, a city I skipped earlier which is located 2 cities south of York), and while I have finished 2 sanctuaries, the victory progress said that I finishe only one. What's going on?