问10015 invalid group id？

拿到后台发送给我的roomID，调用SDK进入房间joinRoom方法，使用interface默认配置，报错，错误码10015，msg是invalid group id。代码如下

let liveRoomVC = PCApplyFaceSignViewController()

// 2. 创建房间配置对象

let option = ILiveRoomOption.defaultInteractUserLive()

// 设置房间内音视频监听

option?.memberStatusListener = liveRoomVC

// 设置房间中断事件监听

option?.roomDisconnectListener = liveRoomVC

// 3. 调用创建房间接口，传入房间ID和房间配置对象

ILiveRoomManager.getInstance().joinRoom(Int32(roomId), option: option, succ: { [weak self] in

self?.navigationController?.pushViewController(liveRoomVC, animated: true)

}) { (module, errId, errMsg) in

print(errMsg!)

}