Given following log snippets, their explanation, and nothing else, explain what failure, if any, occurred during build of this package.

  Snippets are in a format of [X] : [Y], where [X] is a log snippet, and [Y] is the explanation.

  Snippets are delimited with '================'.

  Drawing on information from all snippets, provide a concise explanation of the issue and recommend a solution.

  Explanation of the issue, and recommended solution, should take a handful of sentences.

  Snippets:

  [ERROR: Invalid value `None` in intersphinx_mapping['https://docs.python.org/3/']. Expected a two-element tuple or list.]: [The snippet show error in the sphinx configuration file.]
=============
[      File "/usr/lib/python3.14/site-packages/sphinx/ext/intersphinx/_load.py", line 132, in validate_intersphinx_mapping
        raise ConfigError(msg)
    sphinx.errors.ConfigError: Invalid `intersphinx_mapping` configuration (1 error).]: [The snippet show error in the sphinx configuration file.]

Issue: There was a breaking change in Sphinx 8.2.x. The projects need to update their codebase.
Resolution: In conf.py should be
intersphinx_mapping = {'python': ("https://docs.python.org/3/": None)}
instead of
intersphinx_mapping = {"https://docs.python.org/3/": None}