Update app.py

app.py

@@ -137,7 +137,7 @@ def update(user_choice, left, right, choose_env, data_folder=VIDEO_PATH, flag_to
     last_infer_left_video_path = inference(left)
     last_infer_right_video_path = inference(right)
     
-    return last_infer_left_video_path, last_infer_right_video_path
+    return last_infer_left_video_path, last_infer_right_video_path, env_name
 
 def replay(left, right):  
     return left, right