Looks like it isn’t building the family types, which means we need to look at the data going into it.
Try using a Material.ByName node, with a string of “Default” to get the material for the material input. The file path, category, and name look good.
Also need the preview the data coming out of the TSPlineSurface.ToBrep node.
Change the string to Default (no quotes) and see if that fixes anything.
I managed !! Thank u a lot ! 
Glad it’s working.
I’m guessing that the reason it failed before was the materials you were providing (a list of all materials applied to all each modeled element in your project) wasn’t in the template. Happy to hear you’re working ok now.
Yes, I guess it was.
Happy Dynamoing…