Ensemble example broken

In the tutorial for ensemble modeling (https://docs.sciml.ai/EasyModelAnalysis/stable/tutorials/ensemble_modeling/) it states that "We can access the 3 solutions as sol[i] respectively. Let's get the time series for S from each of the models: sol[:,S]. However, the line sol[:,S] doesn't work when I run it, it gives an error message: ArgumentError: invalid index: S(t) of type SymbolicUtils.BasicSymbolic{Real}

I'm not sure, but I'm thinking this is a problem with ensemble problems in general, but I'll leave this here as well.

Start with the ensemble modeling tutorial at the linked documentation page and run the example containing sol[:,S]. Confirm the reported SymbolicUtils indexing error, then update the tutorial so the ensemble example works as documented and verify the corrected example runs successfully.