cannot build

[claritymatrix]

Describe the bug

Versions

• Platform: linux; (Linux-6.6.90-1-MANJARO-x86_64-with-glibc2.41)
• 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

None.

Loaded Extensions

None.

Traceback

  File "/home/scheme/python312env/lib/python3.13/site-packages/sphinx/theming.py", line 228, in create
    raise ThemeError(__('no theme named %r found (missing theme.toml?)') % name)
sphinx.errors.ThemeError: no theme named 'sphinx_rtd_theme' found (missing theme.toml?)

How to Reproduce

make html

Environment Information

Successfully installed Jinja2-3.1.6 MarkupSafe-3.0.2 Pygments-2.19.1 alabaster-1.0.0 babel-2.17.0 docutils-0.21.2 imagesize-1.4.1 roman-numerals-py-3.1.0 sphinx-8.2.3 sphinxcontrib-applehelp-2.0.0 sphinxcontrib-devhelp-2.0.0 sphinxcontrib-htmlhelp-2.1.0 sphinxcontrib-jsmath-1.0.1 sphinxcontrib-qthelp-2.0.0 sphinxcontrib-serializinghtml-2.0.0

Sphinx extensions

sphinx.ext.autodoc

Additional context

null

[picnixz]

From what I can see, you're missing the RTD theme which you can install as follows:

pip install sphinx-rtd-theme