contrail-fuel-plugin 5.0.0 : not able to assign any roles

[Shweta Naik]

plugin version: 5.0.0
fuel version: 9.0
contrail build : 3.1.0.0-25~mitaka

Not able to assign any roles to nodes after creating the environment.

Throws error pop up.
"Error
A server error has occurred. Please contact your system administrator."

logs:

2016-10-04 23:31:48 ERROR [7f210a417880] (base) Unexpected exception occured
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/nailgun/api/v1/handlers/base.py", line 285, in content_json
    resp = func(cls, *args, **kwargs)
  File "/usr/lib/python2.7/site-packages/nailgun/api/v1/handlers/node.py", line 117, in PUT
    self.collection.single.update(node, nd)
  File "/usr/lib/python2.7/site-packages/nailgun/objects/node.py", line 756, in update
    cls.add_into_cluster(instance, instance.cluster_id)
  File "/usr/lib/python2.7/site-packages/nailgun/objects/node.py", line 1023, in add_into_cluster
    cls.set_default_attributes(instance)
  File "/usr/lib/python2.7/site-packages/nailgun/objects/node.py", line 1269, in set_default_attributes
    NodeAttributes.set_default_hugepages(instance)
  File "/usr/lib/python2.7/site-packages/nailgun/objects/node.py", line 1425, in set_default_hugepages
    supported_hugepages = node.meta['numa_topology']['supported_hugepages']
KeyError: 'numa_topology'
[pid: 25586|app: 0|req: 792/1961] 172.23.192.109 () {50 vars in 869 bytes} [Tue Oct 4 23:31:48 2016] PUT /api/nodes => generated 39 bytes in 140 msecs (HTTP/1.1 500) 5 headers in 223 bytes (2 switches on core 0)
[pid: 25586|app: 0|req: 793/1962] 172.23.192.109 () {46 vars in 836 bytes} [Tue Oct 4 23:31:51 2016] GET /api/notifications?_=1475623680686 => generated 5517 bytes in 20 msecs (HTTP/1.1 200) 4 headers in 185 bytes (2 switches on core 0)
[pid: 25588|app: 0|req: 312/1963] 172.23.192.109 () {46 vars in 854 bytes} [Tue Oct 4 23:31:51 2016] GET /api/nodes/allocation/stats?_=1475623680685 => generated 30 bytes in 49 msecs (HTTP/1.1 200) 4 headers in 185 bytes (2 switches on core 0)
[pid: 25588|app: 0|req: 313/1964] 192.168.200.4 () {38 vars in 536 bytes} [Tue Oct 4 23:31:54 2016] POST /api/nodes/ => generated 79 bytes in 87 msecs (HTTP/1.1 403) 4 headers in 185 bytes (2 switches on core 0)
[pid: 25586|app: 0|req: 794/1965] 192.168.200.3 () {38 vars in 534 bytes} [Tue Oct 4 23:31:59 2016] POST /api/nodes/ => generated 79 bytes in 69 msecs (HTTP/1.1 403) 4 headers in 185 bytes (2 switches on core 0)
[pid: 25587|app: 0|req: 453/1966] 172.23.192.109 () {46 vars in 844 bytes} [Tue Oct 4 23:32:02 2016] GET /api/nodes?cluster_id=&_=1475623680687 => generated 622486 bytes in 122 msecs (HTTP/1.1 200) 4 headers in 185 bytes (2 switches on core 0)
[pid: 25589|app: 0|req: 407/1967] 172.23.192.109 () {46 vars in 836 bytes} [Tue Oct 4 23:32:11 2016] GET /api/notifications?_=1475623680689 => generated 5517 bytes in 16 msecs (HTTP/1.1 200) 4 headers in 185 bytes (2 switches on core 0)
[pid: 25587|app: 0|req: 454/1968] 172.23.192.109 () {46 vars in 854 bytes} [Tue Oct 4 23:32:11 2016] GET /api/nodes/allocation/stats?_=1475623680688 => generated 30 bytes in 37 msecs (HTTP/1.1 200) 4 headers in 185 bytes (2 switches on core 0)