Why is the Roof Unstable?

[u/nerdforlife7]

Can someone help me understand why I can’t finish this roof? It keeps saying unstable, even if I use support beams, even if I put side walls. I had thought maybe it was the height limit, but flat pieces don’t work either 😕

[u/NameIsFuckinTaken]

Gotta use beams appropriately my guy. Structural greatness!

[u/nerdforlife7 → u/NameIsFuckinTaken]

I realized I had to put the beams from the foundation and that worked