Any idea how to place this ?

Hello i am trying to build this frame, but it says this. Its doing other way too (first frame then roof). Do you guys have any idea ?

https://preview.redd.it/mazghgw3gbmh1.png?width=2560&format=png&auto=webp&s=e2f0f3a6c0602e85376e9fa2baf6c33b2d36d3c3