Running Sphinx v4.4.0
loading translations [ru]... готово
loading pickled environment... готово
Theme error:
no theme named 'bootstrap' found (missing theme.conf?)
make: *** [Makefile:20: html] Ошибка 2
Добавить в файл conf.py опцию html_theme_path. Например:
html_theme_path = ['.']