当我使用clearCookie函数时，我的快递服务器不会删除cookie。有人可以帮我理解为什么会这样吗？

用户控制器，设置cookie RefreshToken

const createaccessToken = userId => {
  return sign({ userId },keys.jwtSecret,{
    expiresIn: "15m"
  });
};

const createRefreshToken = userId => {
  return sign({ userId },keys.jwtRefreshSecret,{
    expiresIn: "7d"
  });
};

  async login(req,res,next) {
    const { email,password } = req.body;
    try {
      let user = await User.findOne({ email });
      if (user && bcrypt.compareSync(password,user.hash)) {
        // const accesstoken = jwt.sign({ _id: user._id },keys.jwtSecret);
        // res.json(userWithouthash);

        const accessToken = createaccessToken(user._id);
        const refreshToken = createRefreshToken(user._id);
        user.set("refreshToken",refreshToken);
        let saved = await user.save();

        const { hash,...userWithouthash } = saved.toObject();
        res.cookie("refreshToken",refreshToken,{
          httpOnly: true,path: "/api/users/refresh_token"
        });
        res.send({ accessToken,userWithouthash });
      }
    } catch (err) {
      // res.json({ message: "username or password is incorrect" });
      next(err);
    }
  }

用户控制器，试图删除Cookie

  async logout(req,next) {
    res.clearCookie("refreshToken",{
      path: "/api/users/refresh_token"
    });
    res.send({ message: "Logged Out" });
  },

此函数成功执行后，refreshToken仍然存在。