Traceback (most recent call last):
  File "/root/sandbox/bin/jenkins-jobs", line 11, in <module>
    sys.exit(main())
  File "/root/sandbox/lib/python2.7/site-packages/jenkins_jobs/cli/entry.py", line 146, in main
    jjb.execute()
  File "/root/sandbox/lib/python2.7/site-packages/jenkins_jobs/cli/entry.py", line 140, in execute
    ext.obj.execute(self.options, self.jjb_config)
  File "/root/sandbox/lib/python2.7/site-packages/jenkins_jobs/cli/subcommand/update.py", line 140, in execute
    xml_jobs, n_workers=options.n_workers)
  File "/root/sandbox/lib/python2.7/site-packages/jenkins_jobs/builder.py", line 295, in update_jobs
    concurrent=p_params)
  File "/root/sandbox/lib/python2.7/site-packages/jenkins_jobs/parallel.py", line 112, in concurrentized
    return func(*args, **kwargs)
  File "/root/sandbox/lib/python2.7/site-packages/jenkins_jobs/builder.py", line 318, in parallel_update_job
    self.update_job(job.name, job.output().decode('utf-8'))
  File "/root/sandbox/lib/python2.7/site-packages/jenkins_jobs/builder.py", line 116, in update_job
    if self.is_job(job_name):
  File "/root/sandbox/lib/python2.7/site-packages/jenkins_jobs/builder.py", line 127, in is_job
    if job_name in self.job_list:
  File "/root/sandbox/lib/python2.7/site-packages/jenkins_jobs/builder.py", line 104, in job_list
    self._job_list = set(job['fullname'] for job in self.jobs)
  File "/root/sandbox/lib/python2.7/site-packages/jenkins_jobs/builder.py", line 96, in jobs
    self._jobs = self.jenkins.get_all_jobs()
  File "/root/sandbox/lib/python2.7/site-packages/jenkins/__init__.py", line 951, in get_all_jobs
    jobs = [(0, "", self.get_info(query=JOBS_QUERY)['jobs'])]
  File "/root/sandbox/lib/python2.7/site-packages/jenkins/__init__.py", line 694, in get_info
    requests.Request('GET', self._build_url(INFO))
  File "/root/sandbox/lib/python2.7/site-packages/jenkins/__init__.py", line 533, in jenkins_open
    return self.jenkins_request(req, add_crumb, resolve_auth).text
  File "/root/sandbox/lib/python2.7/site-packages/jenkins/__init__.py", line 549, in jenkins_request
    self.maybe_add_crumb(req)
  File "/root/sandbox/lib/python2.7/site-packages/jenkins/__init__.py", line 347, in maybe_add_crumb
    'GET', self._build_url(CRUMB_URL)), add_crumb=False)
  File "/root/sandbox/lib/python2.7/site-packages/jenkins/__init__.py", line 533, in jenkins_open
    return self.jenkins_request(req, add_crumb, resolve_auth).text
  File "/root/sandbox/lib/python2.7/site-packages/jenkins/__init__.py", line 552, in jenkins_request
    self._request(req))
  File "/root/sandbox/lib/python2.7/site-packages/jenkins/__init__.py", line 524, in _request
    r.url, None, None, self._session.verify, None)
  File "/root/sandbox/lib/python2.7/site-packages/jenkins/__init__.py", line 278, in merge_environment_settings
    **kwargs)
  File "/root/sandbox/lib/python2.7/site-packages/requests/sessions.py", line 674, in merge_environment_settings
    proxies.setdefault(k, v)
AttributeError: 'NoneType' object has no attribute 'setdefault'