python pwb.py category move -lang:test -from:Anothertest -to:Anothertest2
Traceback (most recent call last):
  File "pwb.py", line 263, in <module>
    if not main():
  File "pwb.py", line 257, in main
    run_python_file(filename, [filename] + args, argvu, file_package)
  File "pwb.py", line 121, in run_python_file
    main_mod.__dict__)
  File "./scripts/category.py", line 1292, in <module>
    main()
  File "./scripts/category.py", line 1253, in main
    keep_sortkey=keep_sortkey)
  File "/home/f/mw/pywikibot-core/pywikibot/tools/__init__.py", line 1448, in wrapper
    return obj(*__args, **__kw)
  File "./scripts/category.py", line 499, in __init__
    template_vars)
  File "/home/f/mw/pywikibot-core/pywikibot/tools/__init__.py", line 1448, in wrapper
    return obj(*__args, **__kw)
  File "/home/f/mw/pywikibot-core/pywikibot/i18n.py", line 597, in twtranslate
    % (_messages_package_name, twtitle, __url__))
pywikibot.i18n.TranslationError: Unable to load messages package scripts.i18n for bundle category-replacing
It can happen due to lack of i18n submodule or files. Read https://www.mediawiki.org/wiki/Special:MyLanguage/Manual:Pywikibot/i18n
<class 'pywikibot.i18n.TranslationError'>
CRITICAL: Closing network session.