This does not work

[KlausSchaefers]

When I follow the steps in the readme, I get the following error:

Traceback (most recent call last):
web_1 | File "/app/app.py", line 5, in
web_1 | from elasticsearch import Elasticsearch
web_1 | File "/usr/local/lib/python3.9/site-packages/elasticsearch/init.py", line 24, in
web_1 | from .client import Elasticsearch
web_1 | File "/usr/local/lib/python3.9/site-packages/elasticsearch/client/init.py", line 4, in
web_1 | from ..transport import Transport
web_1 | File "/usr/local/lib/python3.9/site-packages/elasticsearch/transport.py", line 5, in
web_1 | from .connection import Urllib3HttpConnection
web_1 | File "/usr/local/lib/python3.9/site-packages/elasticsearch/connection/init.py", line 2, in
web_1 | from .http_requests import RequestsHttpConnection
web_1 | File "/usr/local/lib/python3.9/site-packages/elasticsearch/connection/http_requests.py", line 3, in
web_1 | from base64 import decodestring
web_1 | ImportError: cannot import name 'decodestring' from 'base64' (/usr/local/lib/python3.9/base64.py)