Versions ======== * Platform: linux; (Linux-6.11.0-1013-azure-x86_64-with-glibc2.39) * Python version: 3.13.3 (CPython) * Sphinx version: 8.2.3 * Docutils version: 0.21.2 * Jinja2 version: 3.1.6 * Pygments version: 2.19.1 Last Messages ============= looking for now-outdated files... none found pickling environment... done checking consistency... done preparing documents... failed Loaded Extensions ================= * sphinx.ext.mathjax (8.2.3) * alabaster (1.0.0) * sphinxcontrib.applehelp (2.0.0) * sphinxcontrib.devhelp (2.0.0) * sphinxcontrib.htmlhelp (2.1.0) * sphinxcontrib.serializinghtml (2.0.0) * sphinxcontrib.qthelp (2.0.0) * sphinx_copybutton (0.5.2) * sphinx.ext.autodoc.preserve_defaults (8.2.3) * sphinx.ext.autodoc.type_comment (8.2.3) * sphinx.ext.autodoc.typehints (8.2.3) * sphinx.ext.autodoc (8.2.3) * sphinx.ext.intersphinx (8.2.3) * sphinx.ext.napoleon (8.2.3) * sphinx_substitution_extensions (unknown version) * sphinxcontrib.spelling (8.0.1) * furo (2024.08.06) * sphinx_basic_ng (1.0.0.beta2) Traceback ========= Traceback (most recent call last): File "/opt/hostedtoolcache/Python/3.13.3/x64/lib/python3.13/site-packages/sphinx/cmd/build.py", line 432, in build_main app.build(args.force_all, args.filenames) ~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/opt/hostedtoolcache/Python/3.13.3/x64/lib/python3.13/site-packages/sphinx/application.py", line 426, in build self.builder.build_update() ~~~~~~~~~~~~~~~~~~~~~~~~~^^ File "/opt/hostedtoolcache/Python/3.13.3/x64/lib/python3.13/site-packages/sphinx/builders/__init__.py", line 375, in build_update self.build( ~~~~~~~~~~^ to_build, ^^^^^^^^^ ...<2 lines>... method='update', ^^^^^^^^^^^^^^^^ ) ^ File "/opt/hostedtoolcache/Python/3.13.3/x64/lib/python3.13/site-packages/sphinx/builders/__init__.py", line 454, in build self.write(docnames, updated_docnames, method) ~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/opt/hostedtoolcache/Python/3.13.3/x64/lib/python3.13/site-packages/sphinx/builders/__init__.py", line 729, in write self.prepare_writing(docnames) ~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^ File "/opt/hostedtoolcache/Python/3.13.3/x64/lib/python3.13/site-packages/sphinx/builders/html/__init__.py", line 438, in prepare_writing self.indexer = IndexBuilder( ~~~~~~~~~~~~^ self.env, ^^^^^^^^^ ...<2 lines>... self.config.html_search_scorer, ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ) ^ File "/opt/hostedtoolcache/Python/3.13.3/x64/lib/python3.13/site-packages/sphinx/search/__init__.py", line 317, in __init__ self.lang = lang_class(options) ~~~~~~~~~~^^^^^^^^^ File "/opt/hostedtoolcache/Python/3.13.3/x64/lib/python3.13/site-packages/sphinx/search/__init__.py", line 95, in __init__ self.init(options) ~~~~~~~~~^^^^^^^^^ File "/opt/hostedtoolcache/Python/3.13.3/x64/lib/python3.13/site-packages/sphinx/search/en.py", line 215, in init self.stemmer = snowballstemmer.stemmer('porter') ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^ File "/opt/hostedtoolcache/Python/3.13.3/x64/lib/python3.13/site-packages/snowballstemmer/__init__.py", line 27, in stemmer raise KeyError("Stemming algorithm '%s' not found" % lang) KeyError: "Stemming algorithm 'porter' not found"