diff --git a/skillagent/skillengine.py b/skillagent/skillengine.py
index 7299bb7..c6940ba 100644
--- a/skillagent/skillengine.py
+++ b/skillagent/skillengine.py
@@ -86,7 +86,7 @@ class IndustrialSkillEngine:
 		# 状态机：记录当前任务执行到的步骤
 		self.state = {"current_skill": None, "history": [], "pending_params": []}
 
-	async def write_output(self, data=None):
+	async def write_output(self, data):
 		debug('-----------write_output() called: {data=}')
 		await self.task_queue.put(data)
 	
@@ -191,7 +191,6 @@ class IndustrialSkillEngine:
 		f = partial(self.run, params_kw)
 		asyncio.create_task(self.run(params_kw))
 		while True:
-			
 			data = await self.task_queue.get()
 			if not data:
 				debug('End Data')