Update app.py

app.py

@@ -44,6 +44,9 @@ plot_raw_data()
 # Predict forecast with Prophet.
 df_train = data[['Date', 'Close']]
 df_train = df_train.rename(columns={"Date": "ds", "Close": "y"})
+st.write(df.head())  # Check the first few rows of the DataFrame
+st.write(type(df))  # Confirm that `df` is a DataFrame
+st.write(type(df['y']))  # Check the type of `df['y']`
 
 m = Prophet()
 m.fit(df_train)