Update app.py

app.py

@@ -95,7 +95,7 @@ def plot_forecasts(forecast_df, train_df, title):
 def select_model_based_on_frequency(freq, nhits_models, timesnet_models, lstm_models, tft_models):
     if freq == 'D':
         return nhits_models['D'], timesnet_models['D'], lstm_models['D'], tft_models['D']
-    elif freq == 'M':
+    elif freq == 'ME':
         return nhits_models['M'], timesnet_models['M'], lstm_models['M'], tft_models['M']
     elif freq == 'H':
         return nhits_models['H'], timesnet_models['H'], lstm_models['H'], tft_models['H']