elasticsearch.helpers.bulk doesn't work

[Dobatymo]

Using Python 3.7, elasticsearch==7.10.0 and ElasticMock==1.6.2

Relevant part of the traceback

  File "__main__", line 189, in fit_iter
    elasticsearch.helpers.bulk(es, it)
  File "C:\Python37\lib\site-packages\elasticsearch\helpers\actions.py", line 390, in bulk
    for ok, item in streaming_bulk(client, actions, *args, **kwargs):
  File "C:\Python37\lib\site-packages\elasticsearch\helpers\actions.py", line 302, in streaming_bulk
    actions, chunk_size, max_chunk_bytes, client.transport.serializer
AttributeError: 'FakeElasticsearch' object has no attribute 'transport'