module 'collections' has no attribute 'abc'

[louwers]

Error detected while processing /home/bart/dotfiles/vim/.vim/plugged/vim-sort-folds/autoload/sortfolds.vim:
line    7:
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/home/bart/.vim/plugged/vim-sort-folds/python3/sort_folds/__init__.py", line 3, in <module>
    from sort_folds import fold
  File "/home/bart/.vim/plugged/vim-sort-folds/python3/sort_folds/fold.py", line 6, in <module>
    class VimFold(collections.abc.Sequence):
  File "/usr/lib/python3.8/collections/__init__.py", line 55, in __getattr__
    raise AttributeError(f'module {__name__!r} has no attribute {name!r}')
AttributeError: module 'collections' has no attribute 'abc'
Error detected while processing function sortfolds#SortFolds:
line    1:
Traceback (most recent call last):
  File "<string>", line 1, in <module>
NameError: name 'sort_folds' is not defined

You want to use:

import collections.abc

Not

import collections