Getting problem in yagi-feed

[devedevendra]

root@yagi-server:~# yagi-feed
(1550) wsgi starting up on http://0.0.0.0:9000/
Traceback (most recent call last):
File "/usr/local/lib/python2.6/dist-packages/eventlet-0.9.16-py2.6.egg/eventlet/wsgi.py", line 336, in handle_one_response
result = self.application(self.environ, start_response)
File "/usr/local/lib/python2.6/dist-packages/WebOb-1.2b3-py2.6.egg/webob/dec.py", line 130, in call
resp = self.call_func(req, _args, *_self.kwargs)
File "/usr/local/lib/python2.6/dist-packages/WebOb-1.2b3-py2.6.egg/webob/dec.py", line 195, in call_func
return self.func(req, _args, *_kwargs)
File "/usr/local/lib/python2.6/dist-packages/yagi-0.12-py2.6.egg/yagi/feed/feed.py", line 39, in route_request
return self.get_all_of_resource(req, resource)
File "/usr/local/lib/python2.6/dist-packages/yagi-0.12-py2.6.egg/yagi/feed/feed.py", line 57, in get_all_of_resource
page, maxpage = self._get_page(req, resource)
File "/usr/local/lib/python2.6/dist-packages/yagi-0.12-py2.6.egg/yagi/feed/feed.py", line 45, in _get_page
if 'page' in req.str_params:
File "/usr/local/lib/python2.6/dist-packages/WebOb-1.2b3-py2.6.egg/webob/descriptors.py", line 116, in fget
warn()
File "/usr/local/lib/python2.6/dist-packages/WebOb-1.2b3-py2.6.egg/webob/descriptors.py", line 113, in warn
3
File "/usr/local/lib/python2.6/dist-packages/WebOb-1.2b3-py2.6.egg/webob/util.py", line 51, in warn_deprecation
raise DeprecationWarning(text)
DeprecationWarning: The attribute None is deprecated: disabled starting WebOb 1.2, use params instead

127.0.0.1 - - [27/Feb/2012 07:12:40] "GET /error_notification HTTP/1.1" 500 1634 0.051431