SW-796: fixed tObservationStartListener

LCS/MessageBus/src/message.py

@@ -199,6 +199,9 @@ class MessageContent(object):
             qpidMsg.body = qpidMsg.body.decode('utf-8')
 
         plIdx = qpidMsg.body.find('<payload>')
+        if isinstance(qpidMsg.body, bytes):
+            qpidMsg.body = qpidMsg.body.decode('utf-8')
+
         if plIdx != -1:
           plIdx += len('<payload>')
           plEndIdx = qpidMsg.body.rfind('</payload>', plIdx)