I am having trouble creating this loft feature on my SW part. I am pretty new to Solidworks so please forgive me. I am looking to make a drill-type part, when I create the Lofted Boss on top of the helix (using the helix as a centerline, and the two triangle sketches as my profiles), it says I cannot perform the task because would result in a zero-thickness geometry.

What does this mean, and how would I resolve this problem?

Thank you

P.S. I attached the solidworks part and the assembly which are the same model, I put both in there in case one doesn't open.