got this error

[anuppoudel54]

Traceback (most recent call last):
File "grabber.py", line 86, in
main()
File "grabber.py", line 31, in main
credentials = get_credentials(args.user, args.passwd)
File "grabber.py", line 58, in get_credentials
url5 += s.cookies['logintoken']
File "/usr/lib/python3/dist-packages/requests/cookies.py", line 328, in getitem
return self._find_no_duplicates(name)
File "/usr/lib/python3/dist-packages/requests/cookies.py", line 399, in _find_no_duplicates
raise KeyError('name=%r, domain=%r, path=%r' % (name, domain, path))
KeyError: "name='logintoken', domain=None, path=None"