pydantic error fix

routes/chat.py

@@ -141,7 +141,7 @@ async def chat_irc_endpoint(websocket: WebSocket):
 
 
 @chat_router.get("/users")
-async def get_connected_users(q: str = Optional[Query(...)], _: User = Depends(get_current_user)):
+async def get_connected_users(q: Optional[str] = Query(None), _: User = Depends(get_current_user)):
     """Get a list of connected users (solo local al worker)"""
     # return {"users": [user.username for user in connected_users if q.lower() in user.username.lower()]}
     all_users = redis_client.smembers("connected_users")