elasticsearch.exceptions.RequestError: RequestError(400, 'illegal_argument_exception', 'Action/metadata line [1] contains an unknown parameter [_type]') error when running python pymm_run.py reset-elasticsearch

[wes-mcw]

Trying to install all the matchminer bits on a new server (without docker) and I found that the elastic search indexes do not seem to be set up. So I tried running python pymm_run.py reset-elasticsearch in the matchminer-api directory.
It seemed to be going along fine until it came to this error:

Any suggestions on what to do next?

Thanks!
Wes

[WARNING] POST http://localhost:9200/_bulk [status:400 request:0.005s]
Traceback (most recent call last):
  File "pymm_run.py", line 87, in <module>
    args.func(args)
  File "pymm_run.py", line 81, in <lambda>
    subp_p.set_defaults(func=lambda x: reset_elasticsearch())
  File "/opt/matchminer-api/matchminer/elasticsearch.py", line 189, in reset_elasticsearch
    add_all_trials_to_elasticsearch()]
  File "/opt/matchminer-api/matchminer/elasticsearch.py", line 44, in add_all_trials_to_elasticsearch
    add_trial_id_list_to_elasticsearch(chunked_trial_ids)
  File "/opt/matchminer-api/matchminer/elasticsearch.py", line 50, in add_trial_id_list_to_elasticsearch
    add_prepared_trials_to_elasticsearch(prepared_trials)
  File "/opt/matchminer-api/matchminer/elasticsearch.py", line 67, in add_prepared_trials_to_elasticsearch
    helpers.bulk(get_es_client(), prepared_trials)
  File "/opt/matchminer-api/env/lib/python3.7/site-packages/elasticsearch/helpers/actions.py", line 314, in bulk
    for ok, item in streaming_bulk(client, actions, *args, **kwargs):
  File "/opt/matchminer-api/env/lib/python3.7/site-packages/elasticsearch/helpers/actions.py", line 244, in streaming_bulk
    **kwargs
  File "/opt/matchminer-api/env/lib/python3.7/site-packages/elasticsearch/helpers/actions.py", line 130, in _process_bulk_chunk
    raise e
  File "/opt/matchminer-api/env/lib/python3.7/site-packages/elasticsearch/helpers/actions.py", line 126, in _process_bulk_chunk
    resp = client.bulk("\n".join(bulk_actions) + "\n", *args, **kwargs)
  File "/opt/matchminer-api/env/lib/python3.7/site-packages/elasticsearch/client/utils.py", line 101, in _wrapped
    return func(*args, params=params, **kwargs)
  File "/opt/matchminer-api/env/lib/python3.7/site-packages/elasticsearch/client/__init__.py", line 1581, in bulk
    headers={"content-type": "application/x-ndjson"},
  File "/opt/matchminer-api/env/lib/python3.7/site-packages/elasticsearch/transport.py", line 409, in perform_request
    timeout=timeout,
  File "/opt/matchminer-api/env/lib/python3.7/site-packages/elasticsearch/connection/http_urllib3.py", line 252, in perform_request
    self._raise_error(response.status, raw_data)
  File "/opt/matchminer-api/env/lib/python3.7/site-packages/elasticsearch/connection/base.py", line 254, in _raise_error
    status_code, error_message, additional_info
elasticsearch.exceptions.RequestError: RequestError(400, 'illegal_argument_exception', 'Action/metadata line [1] contains an unknown parameter [_type]')