i do
pip install aiotdlib (in env)
aiotdlib==0.13.0
Python 3.9.5

main.py copy-paste as in first example
python main.py

result
ImportError: cannot import name 'UpdateChatVoiceChat' from 'aiotdlib.api' (/home/user/dir/dir/env/lib/python3.9/site-packages/aiotdlib/api/init.py)

I noticed that this code was here
find 'UpdateChatVoiceChat' in branch f5caf18
https://github.com/pylakey/aiotdlib/blob/f5caf18346d7d19d9aa9a3f9daa7a29f1361005d/aiotdlib/api/types/update.py

but then it disappeared, and is not defined anywhere else in the current head master 0.13.

What am I doing wrong?