+ sphinx-build -b man -d sphinx-theme-alabaster docs .
Running Sphinx v3.5.3
building [mo]: targets for 0 po files that are out of date
building [man]: all manpages
updating environment: [new config] 4 added, 0 changed, 0 removed
reading sources... [ 25%] changelog
Extension error (releases):
Handler <function generate_changelog at 0x7f85d9b5eee0> for event 'doctree-read' threw an exception (exception: Call either Version('1.2.3') or Version(major=1, ...).)