Cannot find Space Planning Box:Box Family Type

[Archemo]

trying to replicate space planning in Dynamo created by Kyle Martin of SB Architects, i came across a node to input Family types, but couldn’t find the one specified: Space Planning Box:Box

and the math.sum node is showing: value cannot be null, parameter name: source

[Archemo]

found the earlier threads and fixed up a lot of the nodes.

problems persisting in the last group