Navigate to http://localhost.beta/w/index.php/Special:UserProfile/zzzzzz
where invalid username

Get exception

MobileUserInfo is intended for logged in users only

Backtrace:

#0 /Users/jrobson/Sites/w/extensions/MobileFrontend/includes/specials/SpecialUserProfile.php(172): MobileUserInfo->__construct(Object(User))
#1 /Users/jrobson/Sites/w/includes/SpecialPage.php(631): SpecialUserProfile->execute('Sudymorse')
#2 /Users/jrobson/Sites/w/includes/SpecialPageFactory.php(489): SpecialPage->run('Sudymorse')
#3 /Users/jrobson/Sites/w/includes/Wiki.php(298): SpecialPageFactory::executePath(Object(Title), Object(RequestContext))
#4 /Users/jrobson/Sites/w/includes/Wiki.php(602): MediaWiki->performRequest()
#5 /Users/jrobson/Sites/w/includes/Wiki.php(467): MediaWiki->main()
#6 /Users/jrobson/Sites/w/index.php(49): MediaWiki->run()
#7 {main}

Version: unspecified
Severity: normal