Update app.py

app.py

@@ -23,6 +23,9 @@ class CustomNeuralProphet(NeuralProphet):
                 lr_scheduler = param_group["lr_scheduler"]
                 lr_scheduler.step()
 
+optimizer = None
+
+
 m = CustomNeuralProphet(
     n_forecasts=30,
     n_lags=12,