At least it runs then 
progress… I presume you defined the phase more explicitly… 
could you show the nodes around the ones with the new error? Everything expanded would help…
Those kind of errors tend to occur when creating a polycurve from a room with a complex boundary… Like here?
This node is the best I’ve found…
But Room.FinishBoundary might be worth a shot? Or can you extract a Solid in a different way? (Bounding boxes are very robust)
Here’s my version, it’s working a bit differently but you might find it useful…
Hope that’s of interest,
Mark