Update app.py

app.py

@@ -97,8 +97,8 @@ if uploaded_file is not None:
                        ),
               
                        go.Scatter(
-                           x=forecasts_df['ds'].values+forecasts_df['ds'].values[::-1], # x, then x reversed
-                           y=forecasts_df['hi_ci_05'].values+forecasts_df['low_ci_05'].values[::-1], # upper, then lower reversed
+                           x=np.concatenate([forecasts_df['ds'].values,forecasts_df['ds'].values[::-1]]), # x, then x reversed
+                           y=pd.concat([forecasts_df['hi_ci_05'].values+forecasts_df['low_ci_05'].values[::-1]]), # upper, then lower reversed
                             fill='toself',
                             fillcolor='#00CC96',
                             line=dict(color='#00CC96'),