retire_one_learner.py does not work on juniper based lms

gistfile1.txt

scripts/retire_one_learner.py --config_file /home/ubuntu/GDPR/gdpr.yml --username=Ebasket
b'Learner Retirement: Starting learner retirement for Ebasket using config file /home/ubuntu/GDPR/gdpr.yml'
b'Learner Retirement: Unexpected error occurred!\nExpecting value: line 10 column 1 (char 9)'
b'Learner Retirement: Traceback (most recent call last):\n  File "/home/ubuntu/tubular/tubular/scripts/helpers.py", line 156, in _setup_all_apis_or_exit\n    config[\'LMS\'] = LmsApi(lms_base_url, lms_base_url, client_id, client_secret)\n  File "/home/ubuntu/tubular/tubular/edx_api.py", line 39, in __init__\n    access_token, __ = self.get_access_token(lms_base_url, client_id, client_secret)\n  File "/home/ubuntu/tubular/tubular/edx_api.py", line 62, in get_access_token\n    oauth_base_url + OAUTH_ACCESS_TOKEN_URL, client_id, client_secret, token_type=\'jwt\'\n  File "/home/ubuntu/tubular/venv/lib/python3.5/site-packages/edx_rest_api_client/client.py", line 36, in get_oauth_access_token\n    data = response.json()\n  File "/home/ubuntu/tubular/venv/lib/python3.5/site-packages/requests/models.py", line 897, in json\n    return complexjson.loads(self.text, **kwargs)\n  File "/home/ubuntu/tubular/venv/lib/python3.5/site-packages/simplejson/__init__.py", line 518, in loads\n    return _default_decoder.decode(s)\n  File "/home/ubuntu/tubular/venv/lib/python3.5/site-packages/simplejson/decoder.py", line 370, in decode\n    obj, end = self.raw_decode(s)\n  File "/home/ubuntu/tubular/venv/lib/python3.5/site-packages/simplejson/decoder.py", line 400, in raw_decode\n    return self.scan_once(s, idx=_w(s, idx).end())\nsimplejson.errors.JSONDecodeError: Expecting value: line 10 column 1 (char 9)\n'