feat: fix bug

web_server.py

@@ -3,7 +3,6 @@ import os
 import pickle
 import json
 import threading
-import time
 import io
 import enum
 import hugsim_env
@@ -372,7 +371,7 @@ def execute_action_endpoint(
         return Response(content=cache_result, media_type="application/octet-stream")
 
     if env_handler.has_done:
-        result = pickle.dumps({"done": done, "state": None})
+        result = pickle.dumps({"done": True, "state": None})
         _result_dict.push(transaction_id, result)
         return Response(content=result, media_type="application/octet-stream")