Not all lines of STL are printing

I am new to #D printing and I am having an issues I just don't understand. I have a 2D drawing that I have made into an STL. It imports into TinkerCad just fine, and exports an an STL just fine. I can bring that into Cura without an issue, but when I slice it and preview, it shows all of the parts, but not all parts will show as printing when I move up the layers. (and that proves to be correct when I actually print the file)I am attaching the picture, the .stl and the gcode file if anyone wants to take a stab at why this might be happening.

Sliced it in Prusa slicer and it comes up ..... auto repaired 6636 errors

Perhaps try Prusa slicer, I've only just started using it and I really like it.

I will give it a try, than you.