That means that the stream you want to pull from that FMS (or whatever server is listening on the other side) is not there. It is just serving the play request but no traffic is delivered over the connection. After a wile, EMS detects that is a zombie stream and closes the connection. Because the pullstream was done with keepAlive=1, it will re-connect and try again. And the process continue to do so over and over again.
Can you playback that stream in JWPlayer for example? Do a test here: just paste that URL in the wizard and see if that works
So paste "rtmp://10.0.0.227/SMTV_STV/F3DE6316-29F7-438B-9FDC-66AB44773632_1" in the File field