============================= test session starts ==============================
platform linux -- Python 3.10.1, pytest-6.2.5, py-1.11.0, pluggy-0.13.1
rootdir: /build/python-elasticsearch/src/elasticsearch-py-7.8.1
plugins: asyncio-0.16.0
collected 243 items / 1 error / 29 deselected / 213 selected

==================================== ERRORS ====================================
____________ ERROR collecting test_elasticsearch/test_serializer.py ____________
ImportError while importing test module '/build/python-elasticsearch/src/elasticsearch-py-7.8.1/test_elasticsearch/test_serializer.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/usr/lib/python3.10/importlib/__init__.py:126: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
test_elasticsearch/test_serializer.py:13: in <module>
    import pandas as pd
E   ModuleNotFoundError: No module named 'pandas'
=========================== short test summary info ============================
ERROR test_elasticsearch/test_serializer.py
!!!!!!!!!!!!!!!!!!!! Interrupted: 1 error during collection !!!!!!!!!!!!!!!!!!!!
======================= 29 deselected, 1 error in 6.15s ========================
==> ERROR: A failure occurred in check().
    Aborting...