在DolphinDB database中，我订阅了流数据，订阅成功，但没收到数据，查看节点日志，如下所示:
2020-04-30 12:20:33.544636 <INFO> :Received a request to stop publishing table [rtq_future_stream] to site 10.0.40.33:9002
2020-04-30 12:20:33.544668 <WARNING> :The publish connection to site 10.0.40.33:9002 doesn't exist.
2020-04-30 12:20:50.619919 <INFO> :Received a request to publish table [rtq_future_stream] to site 10.0.40.33:9002
2020-04-30 12:20:50.620157 <INFO> :Completed a request to publish table [rtq_future_stream] to site 10.0.40.33:9002
2020-04-30 12:20:50.631700 <ERROR> :Socket::write errno =113
2020-04-30 12:20:50.631758 <ERROR> :AsynchronousPublisherImp::closeConnection 10.0.40.33:9002 #4 with error: publishing with IOErr type 13
请问是什么原因？
