Can't create closed zone in Honeybee energy simulation


I’m trying to make a single zone energy simulation of a building. I first used the _massestozone component but I got 5 zones instead of one. Then I tried to create the zone by using surfaces and now I got the error that the surfaces do not create a closed volume. I have looked at older topics, but even if I try to apply the changes it doesn’t work. Could someone please help me out with this issue?
Energy (660.9 KB)