of-rest api: malfotmed xml response

odl:
org.opendaylight.controller.version = 0.1
org.opendaylight.controller.build.scm.version = 9ef0e0cb27949d6e9153b4042d35f691f87cdcf5
org.opendaylight.controller.build.user = jenkins-controller
org.opendaylight.controller.build.workspace = **********
org.opendaylight.controller.build.timestamp = 1404770862086
org.opendaylight.controller.build.machine = **********

requested url:
http://pce-guest36.cisco.com:8080/restconf/operational/network-topology:network-topology/topology/flow:1

browser showed:

This page contains the following errors:

error on line 1 at column 189: Failed to parse QName 'xmlns:'
Below is a rendering of the page up to the first error.

flow:1openflow:22:2

Example of attached file in attachment. As this file is from a different request, the error is on different column