'RestObject' object has no attribute 'rest_client' about python-ilorest-library

[Yergidy]

The object "RestObject" is for iLO 4, non-redfish servers. For iLO 5 and servers with redfish, the object "RedfishObject" is the one you should be using.

[karthikvrsjp]

I am running the code for iLO 4 on m510 server and getting this error..
AttributeError: 'RestObject' object has no attribute 'rest_client'

Full log:
[root@splunksetup01 Rest]# python3.6 ex16_computer_details.py
Started..!
Trying to get REST object..!
In init function of RestObject
Traceback (most recent call last):
File "ex16_computer_details.py", line 107, in
REST_OBJ = RestObject(iLO_https_url, iLO_account, iLO_password)
File "/home/karthikvr/PYTHON_iLO_REST/python-ilorest-library-master/examples/Rest/_restobject.py", line 90, in init
username=login_account, password=login_password)
File "/usr/local/lib/python3.6/site-packages/redfish/rest/v1.py", line 1231, in get_client_instance
is_redfish=is_redfish, cache=cache, proxy=proxy)
File "/usr/local/lib/python3.6/site-packages/redfish/rest/v1.py", line 445, in init
self.get_root_object()
File "/usr/local/lib/python3.6/site-packages/redfish/rest/v1.py", line 590, in get_root_object
"return code: %d" % resp.status)
redfish.rest.v1.ServerDownOrUnreachableError: Server not reachable, return code: 404
Exception ignored in: <bound method RestObject.del of <_restobject.RestObject object at 0x7f9a632939e8>>
Traceback (most recent call last):
File "/home/karthikvr/PYTHON_iLO_REST/python-ilorest-library-master/examples/Rest/_restobject.py", line 98, in del
self.rest_client.logout()
AttributeError: 'RestObject' object has no attribute 'rest_client'

Can you please let me know the resolution? Many thanks in advance.