Seen in fatalmonitor
#0 /srv/mediawiki/php-1.32.0-wmf.14/extensions/TemplateStyles/includes/TemplateStylesHooks.php(188): MWExceptionHandler::handleError(integer, string, string, integer, array, array) #1 /srv/mediawiki/php-1.32.0-wmf.14/includes/Hooks.php(174): TemplateStylesHooks::onParserClearState(Parser) #2 /srv/mediawiki/php-1.32.0-wmf.14/includes/Hooks.php(202): Hooks::callHook(string, array, array, NULL) #3 /srv/mediawiki/php-1.32.0-wmf.14/includes/parser/Parser.php(392): Hooks::run(string, array) #4 /srv/mediawiki/php-1.32.0-wmf.14/includes/parser/Parser.php(4708): Parser->clearState() #5 /srv/mediawiki/php-1.32.0-wmf.14/includes/parser/Parser.php(696): Parser->startParse(Title, ParserOptions, integer, boolean) #6 /srv/mediawiki/php-1.32.0-wmf.14/includes/parser/Parser.php(4734): Parser->preprocess(string, Title, ParserOptions) #7 /srv/mediawiki/php-1.32.0-wmf.14/includes/cache/MessageCache.php(1089): Parser->transformMsg(string, ParserOptions, Title) #8 /srv/mediawiki/php-1.32.0-wmf.14/includes/Message.php(1281): MessageCache->transform(string, boolean, LanguageEn, Title) #9 /srv/mediawiki/php-1.32.0-wmf.14/includes/Message.php(881): Message->transformText(string) #10 /srv/mediawiki/php-1.32.0-wmf.14/includes/Message.php(941): Message->toString(string) #11 /srv/mediawiki/php-1.32.0-wmf.14/includes/OutputPage.php(953): Message->text() #12 /srv/mediawiki/php-1.32.0-wmf.14/includes/OutputPage.php(1001): OutputPage->setHTMLTitle(Message) #13 /srv/mediawiki/php-1.32.0-wmf.14/includes/api/ApiFormatBase.php(256): OutputPage->setPageTitle(string) #14 /srv/mediawiki/php-1.32.0-wmf.14/includes/api/ApiFormatRaw.php(85): ApiFormatBase->closePrinter() #15 /srv/mediawiki/php-1.32.0-wmf.14/includes/api/ApiMain.php(1809): ApiFormatRaw->closePrinter() #16 /srv/mediawiki/php-1.32.0-wmf.14/includes/api/ApiMain.php(598): ApiMain->printResult(integer) #17 /srv/mediawiki/php-1.32.0-wmf.14/includes/api/ApiMain.php(542): ApiMain->handleException(MWException) #18 /srv/mediawiki/php-1.32.0-wmf.14/includes/api/ApiMain.php(506): ApiMain->executeActionWithErrorHandling() #19 /srv/mediawiki/php-1.32.0-wmf.14/api.php(83): ApiMain->execute() #20 /srv/mediawiki/w/api.php(3): include(string) #21 {main}