$ python pwb.py scripts/script_wui.py
* Initialization of bot
** Redirecting Lua print in order to catch it
** Pre-loading all relevant page contents
Traceback (most recent call last):
  File "pwb.py", line 157, in <module>
    run_python_file(fn, argv, argvu)
  File "pwb.py", line 67, in run_python_file
    exec(compile(source, filename, "exec"), main_mod.__dict__)
  File "scripts/script_wui.py", line 292, in <module>
    main()
  File "scripts/script_wui.py", line 283, in main
    bot = ScriptWUIBot(site, chan, site.user() + "_WUI", "irc.wikimedia.org")
  File "scripts/script_wui.py", line 137, in __init__
    self.refs[item].get(force=True)   # load all page contents
  File "...pywikibot/__init__.py", line 432, in wrapper
    return method(*__args, **__kw)
  File "...pywikibot/__init__.py", line 432, in wrapper
    return method(*__args, **__kw)
  File "...pywikibot/page.py", line 315, in get
    self._getInternals(sysop)
  File "...pywikibot/page.py", line 339, in _getInternals
    self.site.loadrevisions(self, getText=True, sysop=sysop)
  File ".../pywikibot/site.py", line 2024, in loadrevisions
    raise NoPage(page)
pywikibot.exceptions.NoPage: Page [[en:User:DrTrigon/DrTrigonBot/script wui-shell.css]] doesn't exist.
<class 'pywikibot.exceptions.NoPage'>
CRITICAL: Waiting for 1 network thread(s) to finish. Press ctrl-c to abort