Update app.py

app.py

@@ -129,6 +129,7 @@ def server(input, output, session: Session):
             @output(id="plot_" + str(i))
             @render.plot
             def plot_prediction():
+                r = results[0]
                 fig, ax = plt.subplots()
         
                 # ax = plt.Axes(fig, [0., 0., 1., 1.])