load yaml erro

Traceback (most recent call last):
  File "/usr/lib/python2.7/threading.py", line 801, in __bootstrap_inner
    self.run()
  File "/usr/local/lib/python2.7/dist-packages/yandextank/core/consoleworker.py", line 377, in run
    self.core.plugins_prepare_test()
  File "/usr/local/lib/python2.7/dist-packages/yandextank/core/tankcore.py", line 254, in plugins_prepare_test
    plugin.prepare_test()
  File "/usr/local/lib/python2.7/dist-packages/yandextank/plugins/DataUploader/plugin.py", line 287, in prepare_test
    self.__save_conf()
  File "/usr/local/lib/python2.7/dist-packages/yandextank/plugins/DataUploader/plugin.py", line 458, in __save_conf
    self.lp_job.send_config(requisites, content)
  File "/usr/local/lib/python2.7/dist-packages/yandextank/plugins/DataUploader/plugin.py", line 805, in send_config
    self.api_client.send_config(self.number, lp_requisites, content, trace=self.log_other_requests)
  File "/usr/local/lib/python2.7/dist-packages/yandextank/plugins/DataUploader/client.py", line 644, in send_config
    self.__post_raw(addr, {field_name: unicode(config_content)}, trace=trace)
  File "/usr/local/lib/python2.7/dist-packages/yandextank/plugins/DataUploader/client.py", line 278, in __post_raw
    'POST', addr, txt_data, lambda r: r.content, trace=trace, interrupted_event=interrupted_event)
  File "/usr/local/lib/python2.7/dist-packages/yandextank/plugins/DataUploader/client.py", line 192, in __make_api_request
    response = self.__send_single_request(request, ids.next(), trace=trace)
  File "/usr/local/lib/python2.7/dist-packages/yandextank/plugins/DataUploader/client.py", line 131, in __send_single_request
    resp = self.session.send(p, timeout=self.connection_timeout)
  File "/usr/local/lib/python2.7/dist-packages/requests/sessions.py", line 686, in send
    r.content
  File "/usr/local/lib/python2.7/dist-packages/requests/models.py", line 828, in content
    self._content = b''.join(self.iter_content(CONTENT_CHUNK_SIZE)) or b''
  File "/usr/local/lib/python2.7/dist-packages/requests/models.py", line 753, in generate
    raise ChunkedEncodingError(e)
ChunkedEncodingError: ('Connection broken: IncompleteRead(0 bytes read)', IncompleteRead(0 bytes read))