Update app.py

app.py

@@ -156,13 +156,14 @@ def select_model(horizon, model_type, max_steps=200):
         raise ValueError(f"Unsupported model type: {model_type}")
 
 def model_train(df,model):
+    df['ds'] = pd.to_datetime(df['ds'])
     model.fit(df)
     return model
 
 def forecast_time_series(df, model_type, horizon, max_steps=200):
     start_time = time.time()  # Start timing
     freq = determine_frequency(df)
-    st.sidebar.write(f"Determined frequency: {freq}")
+    st.sidebar.write(f"Data frequency: {freq}")
     
     selected_model = select_model(horizon, model_type, max_steps)
     model = model_train(df, selected_model)