How can I solve this error in Grasshopper

I am doing a parametric study, and I have encountered this error in the Colibri Aggregator.

The error message says “1. Solution exception: An item with the same key has already been added”.

This is a screenshot:

I have attached the GH file.

Thanks!
PE - Polygon Study - Bouncy Solver.gh (39.0 KB)

Hello.
How did you solve the problem?