Traceback (most recent call last):
  File "/usr/bin/calibre", line 21, in <module>
    sys.exit(calibre())
             ~~~~~~~^^
  File "/usr/lib64/calibre/calibre/gui_launch.py", line 74, in calibre
    main(args)
    ~~~~^^^^^^
  File "/usr/lib64/calibre/calibre/gui2/main.py", line 548, in main
    run_main(app, opts, args, gui_debug, si, retry_communicate=True)
    ~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib64/calibre/calibre/gui2/main.py", line 560, in run_main
    return run_gui(opts, args, app, gui_debug=gui_debug)
  File "/usr/lib64/calibre/calibre/gui2/main.py", line 398, in run_gui
    run_gui_(opts, args, app, gui_debug)
    ~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib64/calibre/calibre/gui2/main.py", line 408, in run_gui_
    from calibre.gui2.ui import Main
  File "/usr/lib64/calibre/calibre/gui2/ui.py", line 51, in <module>
    from calibre.gui2.init import LayoutMixin, LibraryViewMixin
  File "/usr/lib64/calibre/calibre/gui2/init.py", line 37, in <module>
    from calibre.gui2.library.alternate_views import GridView
  File "/usr/lib64/calibre/calibre/gui2/library/alternate_views.py", line 67, in <module>
    from calibre.gui2.pin_columns import PinContainer
  File "/usr/lib64/calibre/calibre/gui2/pin_columns.py", line 9, in <module>
    from calibre.gui2.library.delegates import (
    ...<17 lines>...
    )
  File "/usr/lib64/calibre/calibre/gui2/library/delegates.py", line 46, in <module>
    from calibre.gui2.dialogs.comments_dialog import CommentsDialog, PlainTextDialog
  File "/usr/lib64/calibre/calibre/gui2/dialogs/comments_dialog.py", line 11, in <module>
    from calibre.gui2.comments_editor import Editor
  File "/usr/lib64/calibre/calibre/gui2/comments_editor.py", line 14, in <module>
    from html5_parser import parse
  File "/usr/lib64/python3/site-packages/html5_parser/__init__.py", line 31, in <module>
    raise RuntimeError(
    ...<4 lines>...
            LIBXML_VERSION, etree.LIBXML_VERSION))
RuntimeError: html5-parser and lxml are using different versions of libxml2. This happens commonly when using pip installed versions of lxml. Use pip install --no-binary lxml lxml instead. libxml2 versions: html5-parser: (2, 12, 10) != lxml: (2, 14, 6)