Utf8Case.ser is missing, please run "make" in the serialized directory

Backtrace:

#0 /usr/share/mediawiki/languages/Language.php(1429): Language::getCaseMaps()
#1 /usr/share/mediawiki/languages/Language.php(2574): Language->lc('???????????????...')
#2 /usr/share/mediawiki/languages/Language.php(2532): Language->fixUpSettings()
#3 /usr/share/mediawiki/languages/Language.php(1334): Language->load()
#4 /usr/share/mediawiki/includes/MessageCache.php(539): Language->getMessage('newarticletext')
#5 [internal function]: MessageCache->get('newarticletext', true, false)
#6 /usr/share/mediawiki/includes/StubObject.php(58): call_user_func_array(Array, Array)
#7 /usr/share/mediawiki/includes/StubObject.php(76): StubObject->_call('get', Array)
#8 [internal function]: StubObject->__call('get', Array)
#9 /usr/share/mediawiki/includes/GlobalFunctions.php(583): StubObject->get('newarticletext', true, false)
#10 /usr/share/mediawiki/includes/GlobalFunctions.php(716): wfMsgGetKey('newarticletext', true, false, false)
#11 /usr/share/mediawiki/includes/OutputPage.php(1846): wfMsgExt('newarticletext', Array, Array)
#12 /usr/share/mediawiki/includes/EditPage.php(694): OutputPage->wrapWikiMsg('<div class="mw-...', 'newarticletext')
#13 /usr/share/mediawiki/includes/EditPage.php(422): EditPage->showIntro()
#14 /usr/share/mediawiki/includes/EditPage.php(346): EditPage->edit()
#15 /usr/share/mediawiki/includes/Wiki.php(505): EditPage->submit()
#16 /usr/share/mediawiki/includes/Wiki.php(63): MediaWiki->performAction(Object(OutputPage), Object(Article), Object(Title), Object(User), Object(WebRequest))
#17 /usr/share/mediawiki/index.php(114): MediaWiki->initialize(Object(Title), Object(Article), Object(OutputPage), Object(User), Object(WebRequest))
#18 {main}