pandas_to_eland: Not working. Error:AttributeError: 'Series' object has no attribute 'iteritems'

I am using the example from doc string:

import pandas as pd
import eland as ed

pd_df = pd.DataFrame(
    data={
        "A": 3.141,
        "B": 1,
        "C": "foo",
        "D": pd.Timestamp("20190102"),
        "E": [1.0, 2.0, 3.0],
        "F": False,
        "G": [1, 2, 3],
        "H": "Long text - to be indexed as es type text",
    },
    index=["0", "1", "2"],
)

ed_df = ed.pandas_to_eland(
    pd_df,
    "http://localhost:9200",
    "pandas_to_eland",
    es_if_exists="replace",
    es_refresh=True,
    es_type_overrides={"H": "text"},
)  # index field 'H' as text not keyword

The script fails to run saying:

Traceback (most recent call last):
  File "/Users/tarik.setia/Desktop/es-similarity-search/test.py", line 19, in <module>
    ed_df = ed.pandas_to_eland(
            ^^^^^^^^^^^^^^^^^^^
  File "/Users/tarik.setia/Desktop/es-similarity-search/.venv/lib/python3.11/site-packages/eland/etl.py", line 162, in pandas_to_eland
    mapping = FieldMappings._generate_es_mappings(pd_df, es_type_overrides)
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/tarik.setia/Desktop/es-similarity-search/.venv/lib/python3.11/site-packages/eland/field_mappings.py", line 549, in _generate_es_mappings
    for column, dtype in dataframe.dtypes.iteritems():
                         ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/tarik.setia/Desktop/es-similarity-search/.venv/lib/python3.11/site-packages/pandas/core/generic.py", line 5989, in __getattr__
    return object.__getattribute__(self, name)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'Series' object has no attribute 'iteritems'

Issue: https://github.com/elastic/eland/blob/main/eland/field_mappings.py#L551C47-L551C56

elastic / eland

pandas_to_eland: Not working. Error:AttributeError: 'Series' object has no attribute 'iteritems' #565