Yes I did. And no I did not update MW or PHP. It just stopped working at some point. Also it is now breaking another wiki on that same farm:
[85b369eaf612a29031da2ec0] /index.php/Main_Page MWException from line 336 of /mnt/centaurdata/websites/MediaWikiFarm/includes/MagicWord.php: Error: invalid magic word 'createPage'
Backtrace:
#0 /mnt/centaurdata/websites/MediaWikiFarm/includes/MagicWord.php(261): MagicWord->load(string)
#1 /mnt/centaurdata/websites/MediaWikiFarm/includes/parser/Parser.php(4858): MagicWord::get(string)
#2 /mnt/centaurdata/websites/MediaWikiFarm/extensions/AutoCreatePage/AutoCreatePage.php(55): Parser->setFunctionHook(string, Closure)
#3 [internal function]: {closure}(Parser)
#4 /mnt/centaurdata/websites/MediaWikiFarm/includes/Hooks.php(186): call_user_func_array(Closure, array)
#5 /mnt/centaurdata/websites/MediaWikiFarm/includes/parser/Parser.php(337): Hooks::run(string, array)
#6 [internal function]: Parser->firstCallInit()
#7 /mnt/centaurdata/websites/MediaWikiFarm/includes/StubObject.php(113): call_user_func_array(array, array)
#8 /mnt/centaurdata/websites/MediaWikiFarm/includes/StubObject.php(139): StubObject->_call(string, array)
#9 /mnt/centaurdata/websites/MediaWikiFarm/includes/cache/MessageCache.php(1112): StubObject->__call(string, array)
#10 /mnt/centaurdata/websites/MediaWikiFarm/includes/cache/MessageCache.php(1112): StubObject->firstCallInit()
#11 /mnt/centaurdata/websites/MediaWikiFarm/includes/cache/MessageCache.php(1088): MessageCache->getParser()
#12 /mnt/centaurdata/websites/MediaWikiFarm/includes/Message.php(1259): MessageCache->transform(string, boolean, Language, Title)
#13 /mnt/centaurdata/websites/MediaWikiFarm/includes/Message.php(874): Message->transformText(string)
#14 /mnt/centaurdata/websites/MediaWikiFarm/includes/Message.php(934): Message->toString(string)
#15 /mnt/centaurdata/websites/MediaWikiFarm/includes/OutputPage.php(936): Message->text()
#16 /mnt/centaurdata/websites/MediaWikiFarm/includes/OutputPage.php(984): OutputPage->setHTMLTitle(Message)
#17 /mnt/centaurdata/websites/MediaWikiFarm/includes/page/Article.php(464): OutputPage->setPageTitle(string)
#18 /mnt/centaurdata/websites/MediaWikiFarm/includes/actions/ViewAction.php(68): Article->view()
#19 /mnt/centaurdata/websites/MediaWikiFarm/includes/MediaWiki.php(499): ViewAction->show()
#20 /mnt/centaurdata/websites/MediaWikiFarm/includes/MediaWiki.php(293): MediaWiki->performAction(Article, Title)
#21 /mnt/centaurdata/websites/MediaWikiFarm/includes/MediaWiki.php(862): MediaWiki->performRequest()
#22 /mnt/centaurdata/websites/MediaWikiFarm/includes/MediaWiki.php(523): MediaWiki->main()
#23 /mnt/centaurdata/websites/MediaWikiFarm/index.php(43): MediaWiki->run()
#24 {main}