Update index.py

index.py

@@ -228,7 +228,9 @@ def update_output(selected_topic, selected_domain, start_date, end_date):
         line_fig_4.update_traces(line_color='#D81B60')
     
         return line_fig_1, bar_fig_1, line_fig_2, line_fig_3, line_fig_4
-
+    else:
+        return {‘data’: []},{‘data’: []} ,{‘data’: []} ,{‘data’: []} , {‘data’: []} 
+    
     # return line_fig_1