Warning, treated as error:
WARNING: 'default' html theme has been renamed to 'classic'. Please change your html_theme setting either to the new 'alabaster' default theme, or to 'classic' to keep using the old default.

ERROR: InvocationError: '/var/lib/jenkins/workspace/Webapp-Component-Build/mergeVE/src/lsp/.tox/docs/bin/sphinx-build -W -b html -d /var/lib/jenkins/workspace/Webapp-Component-Build/mergeVE/src/lsp/.tox/docs/tmp/doctrees . /var/lib/jenkins/workspace/Webapp-Component-Build/mergeVE/src/lsp/.tox/docs/build/html'