Getting same (https://github.com/MagicStack/asyncpg/issues/501 and https://github.com/MagicStack/asyncpg/issues/565) issue with Python 3.8.3 and: ``` asyncpg==0.20.1 asyncpgsa==0.26.3 psycopg2==2.8.5 ``` on arm64 ``` src/my_app/db/__init__.py:1: in <module> from asyncpgsa import PG ../.venv38/lib/python3.8/site-packages/asyncpgsa/__init__.py:1: in <module> from .pool import create_pool ../.venv38/lib/python3.8/site-packages/asyncpgsa/pool.py:3: in <module> import asyncpg ../.venv38/lib/python3.8/site-packages/asyncpg/__init__.py:8: in <module> from .connection import connect, Connection # NOQA ../.venv38/lib/python3.8/site-packages/asyncpg/connection.py:19: in <module> from . import connect_utils ../.venv38/lib/python3.8/site-packages/asyncpg/connect_utils.py:27: in <module> from . import protocol ../.venv38/lib/python3.8/site-packages/asyncpg/protocol/__init__.py:8: in <module> from .protocol import Protocol, Record, NO_TIMEOUT # NOQA _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ > ??? E AttributeError: type object 'asyncpg.protocol.protocol.Codec' has no attribute '__reduce_cython__' ```