output more data when waiting for session root, to see if *anything* happens

engine/nsmservercontrol.py

@@ -574,6 +574,7 @@ class NsmServerControl(object):
                     sessionRoot = msg.params[0]                    
                     ready = True
                 else:
+                    logger.warning(f"Waiting for session root from nsmd but got: {msg.oscpath} {msg.params}")
                     self._queue.append(msg)
 
             except BlockingIOError: #happens while no data is received. Has nothing to do with blocking or not.