fix: lock

web_server.py

@@ -173,11 +173,11 @@ class EnvHandler:
     This can include multiple scene and configurations.
     """
     def __init__(self, scene_list: List[SceneConfig], base_output: str):
+        self._lock = threading.Lock()
         self.scene_list = scene_list
         self.base_output = base_output
         self.env = None
         self.reset_env()
-        self._lock = threading.Lock()
 
     def _switch_scene(self, scene_index: int):
         """