Gentoo's Bugzilla –
Attachment 591734 Details for
Bug 696144dev-python/notebook-5.7.0 USE=doc - Exception occurred: File "/usr/lib/python3.7/site-packages/nbsphinx.py", line 1177, in html_collect_pages for file in app.status_iterator(files, 'copying linked files... ', AttributeError: 'Sphinx' object has no a