from mkdocs import config File "/usr/local/lib/python3.9/site-packages/mkdocs/config/__init__.py", line 2, in <module> from mkdocs.config.defaults import DEFAULT_SCHEMA File "/usr/local/lib/python3.9/site-packages/mkdocs/config/defaults.py", line 4, in <module> from mkdocs.config import config_options File "/usr/local/lib/python3.9/site-packages/mkdocs/config/config_options.py", line 5, in <module> from collections import Sequence, namedtuple ImportError: cannot import name 'Sequence' from 'collections' (/usr/local/lib/python3.9/collections/__init__.py) ERROR: Job failed: exit code 1