Can not load OCSP response

I got error but it is ok with openssl command.

Traceback (most recent call last):
  File "test_ocsp.py", line 32, in <module>
    valid_path = validator.validate_usage(validator._certificate.key_usage_value.native, set(validator._certificate.extended_key_usage_value.native))
  File "/Users/huytn/.pyenv/versions/2.7.13/lib/python2.7/site-packages/certvalidator/__init__.py", line 193, in validate_usage
    self._validate_path()
  File "/Users/huytn/.pyenv/versions/2.7.13/lib/python2.7/site-packages/certvalidator/__init__.py", line 121, in _validate_path
    validate_path(self._context, candidate_path)
  File "/Users/huytn/.pyenv/versions/2.7.13/lib/python2.7/site-packages/certvalidator/validate.py", line 50, in validate_path
    return _validate_path(validation_context, path)
  File "/Users/huytn/.pyenv/versions/2.7.13/lib/python2.7/site-packages/certvalidator/validate.py", line 387, in _validate_path
    end_entity_name_override=end_entity_name_override
  File "/Users/huytn/.pyenv/versions/2.7.13/lib/python2.7/site-packages/certvalidator/validate.py", line 895, in verify_ocsp_response
    ocsp_responses = validation_context.retrieve_ocsps(cert, issuer)
  File "/Users/huytn/.pyenv/versions/2.7.13/lib/python2.7/site-packages/certvalidator/context.py", line 500, in retrieve_ocsps
    **self._ocsp_fetch_params
  File "/Users/huytn/.pyenv/versions/2.7.13/lib/python2.7/site-packages/certvalidator/ocsp_client.py", line 112, in fetch
    ocsp_response = ocsp.OCSPResponse.load(response.read())
  File "/Users/huytn/.pyenv/versions/2.7.13/lib/python2.7/site-packages/asn1crypto/core.py", line 230, in load
    value, _ = _parse_build(encoded_data, spec=spec, spec_params=kwargs, strict=strict)
  File "/Users/huytn/.pyenv/versions/2.7.13/lib/python2.7/site-packages/asn1crypto/core.py", line 5095, in _parse_build
    info, new_pointer = _parse(encoded_data, encoded_len, pointer)
  File "/Users/huytn/.pyenv/versions/2.7.13/lib/python2.7/site-packages/asn1crypto/parser.py", line 164, in _parse
    raise ValueError(_INSUFFICIENT_DATA_MESSAGE % (2, data_len - pointer))
ValueError: Insufficient data - 2 bytes requested but only 0 available

Start with the reported test_ocsp.py call and trace into certvalidator/ocsp_client.py at fetch(), then compare the response passed to asn1crypto's OCSPResponse.load() with the openssl result. Reproduce the failure with the same certificate and OCSP endpoint if possible; done means the cause and expected handling of the insufficient response are established and covered by a test.