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: Bad exit status from /var/tmp/rpm-tmp.tvSnU6 (%build)
    Bad exit status from /var/tmp/rpm-tmp.tvSnU6 (%build)
]: [The build failed in %build phase.]
=============
[+ sphinx-build docs html
Running Sphinx v8.1.3
WARNING: Invalid configuration value found: 'language = None'. Update your configuration to a valid language code. Falling back to 'en' (English).
loading translations [en]... done
making output directory... done
Converting `source_suffix = '.rst'` to `source_suffix = {'.rst': 'restructuredtext'}`.
ERROR: Invalid value `None` in intersphinx_mapping['https://docs.python.org/']. Expected a two-element tuple or list.
Configuration error:
Invalid `intersphinx_mapping` configuration (1 error).]: [sphinx failed to generate the documentation.]

Issue: intersphinx_mapping expects two elements, while there is only one argument passed.
Resolution: Instead of
  intersphinx_mapping = {'https://docs.python.org/': None}
use
  intersphinx_mapping = {'python': ('https://docs.python.org/3', None)}