Arch Linux

Calibre is not starting:

$ calibre
Traceback (most recent call last):
File "/usr/bin/calibre", line 20, in <module>
sys.exit(calibre())
File "/usr/lib/calibre/calibre/gui_launch.py", line 73, in calibre
main(args)
File "/usr/lib/calibre/calibre/gui2/main.py", line 504, in main
run_main(app, opts, args, gui_debug, si)
File "/usr/lib/calibre/calibre/gui2/main.py", line 511, in run_main
return run_gui(opts, args, app, gui_debug=gui_debug)
File "/usr/lib/calibre/calibre/gui2/main.py", line 377, in run_gui
run_gui_(opts, args, app, gui_debug)
File "/usr/lib/calibre/calibre/gui2/main.py", line 387, in run_gui_
from calibre.gui2.ui import Main
File "/usr/lib/calibre/calibre/gui2/ui.py", line 46, in <module>
from calibre.gui2.init import LayoutMixin, LibraryViewMixin
File "/usr/lib/calibre/calibre/gui2/init.py", line 21, in <module>
from calibre.gui2.book_details import BookDetails
File "/usr/lib/calibre/calibre/gui2/book_details.py", line 19, in <module>
from calibre.ebooks.metadata.book.render import mi_to_html
File "/usr/lib/calibre/calibre/ebooks/metadata/book/render.py", line 16, in <module>
from calibre.library.comments import comments_to_html, markdown
File "/usr/lib/calibre/calibre/library/comments.py", line 10, in <module>
from calibre.ebooks.BeautifulSoup import (
File "/usr/lib/calibre/calibre/ebooks/BeautifulSoup.py", line 6, in <module>
import bs4
File "/home/kemel/.local/lib/python3.8/site-packages/bs4/__init__.py", line 30, in <module>
from .builder import builder_registry, ParserRejectedMarkup
File "/home/kemel/.local/lib/python3.8/site-packages/bs4/builder/__init__.py", line 314, in <module>
from . import _html5lib
File "/home/kemel/.local/lib/python3.8/site-packages/bs4/builder/_html5lib.py", line 70, in <module>
class TreeBuilderForHtml5lib(html5lib.treebuilders._base.TreeBuilder):
AttributeError: module 'html5lib.treebuilders' has no attribute '_base'

$ calibre --version
calibre (calibre 5.4.2)