I am running: reconcilers = [ BottomUp(), MinTrace(method='mint_shrink'), MinTrace(method='ols') ] hrec = HierarchicalReconciliation(reconcilers=reconcilers) Y_rec_df = hrec.reconcile(Y_hat_df, Y_fitted_merged_df, S, tags) and getting this error: KeyError: 'None of [RangeIndex(start=0, stop=11553, step=1)] are in the [index]' Any pointers?