fix again

expense_forecast/Expense_Forecasting.py

@@ -51,7 +51,7 @@ def get_input_data(income, interest_rate, inflation_rate, holidays):
 
 def forecast_expense(model_fit, input_data, df):
     if (input_data['Income (VND)'].iloc[0] < 5000000):
-        return input_data['Income (VND)'] * 0.78492
+        return input_data['Income (VND)'].iloc[0] * 0.78492
     forecast = model_fit.predict(start=len(df), end=len(df), exog=input_data)
     return forecast.iloc[0]