That looks correct, though I don’t read icons very well. What does the error message say on the red component? How about the Mass Addition ‘Result’ output?
Since the Polygon component was orange, I’m guessing you have one or more radius=0 values that might cause problems?
If you had posted your GH file, I would know for sure.
3. Attach minimal versions of all the relevant files
P.S. The HexGrid ‘P’ output gives you the center points without using Area ‘Centroid’.