Beam Element to Slab Element Connection Problems

Hello All,

I am very new to Grasshopper and I have run into some trouble using Karamba to analyze my model. When I assemble my model and then try to analyze using Karamba I am getting the error saying that I have a singular stiffness-matrix. I think the problem is in connection to my mesh/shell elements. Unfortunately, I have a deadline soon approaching soon and cannot figure out how to fix the problem. I've attached my original (incomplete) model as well as the incomplete attempt at fixing the error called "EERI Optimization_MeshPlane".

Thank you!

Jared