AttributeError: module 'collections' has no attribute 'Mapping'

[pindge]

Exception occurred:
  File "/home/odc/.local/lib/python3.10/site-packages/sphinxcontrib/dd/yaml.py", line 48, in _do_resolve
    if isinstance(node, collections.Mapping) and '$ref' in node:
AttributeError: module 'collections' has no attribute 'Mapping'
The full traceback has been saved in /tmp/sphinx-err-a8_3ays0.log, if you want to report the issue to the developers.
Please also report this if it was a user error, so that a better error message can be provided next time.
A bug report can be filed in the tracker at <https://github.com/sphinx-doc/sphinx/issues>. Thanks!
make: *** [Makefile:34: html] Error 2

[bstriner]

Fix here: #7

Install patch with pip install git+https://github.com/bstriner/[email protected]+abc