How to group long list

[darianaguila10]

hello, I am using your package,
but I need to search the list that is large, when I do it it gives me a range error, I am using StreamBuilder for the search. I think it has to do with the scroll position or something like that.

[ericel]

I think it has to do with itemCount. This error happens when new items are added to the stream. I have the same problem.