How to sort Opps in Chart by StageName as per order in Sales Process

hmmmmm I’m not really a developer, so __I’m never really sure what I’m looking at we’ve these things.

Essentially the only difference between my code and your code are the lines highlighted below

Would the code be failing because your model is an Opportunity model, whereas mine is an OpportunityLineItem model?

Here is my aggregate model

Here is my grouping