Update app.py

app.py

@@ -58,7 +58,7 @@ if uploaded_file is not None:
                                        max_p=12,
                                        max_q=12
                                       )
-              fcst.fit(series_train)    
+              fcst.fit(series_train['y'])    
               forecasts, ci_05 = fcst.predict(horizons, alpha=0.05)
               _, ci_10 = fcst.predict(horizons, alpha=0.1)
           st.success('Done!')