BadMethodCallException from line 478 of /srv/mediawiki/php-1.30.0-wmf.7/extensions/Quiz/Question.php: Call to a member function processTemplate() on a non-object (null)
Stack:
#0 /srv/mediawiki/php-1.30.0-wmf.7/extensions/Quiz/Question.php(344): Question->parseTextField(array)
#1 /srv/mediawiki/php-1.30.0-wmf.7/extensions/Quiz/Quiz.class.php(325): Question->textFieldParseObject(string)
#2 /srv/mediawiki/php-1.30.0-wmf.7/extensions/Quiz/Quiz.class.php(250): Quiz->parseQuestion(array, boolean)
#3 /srv/mediawiki/php-1.30.0-wmf.7/extensions/Quiz/Quiz.class.php(123): Quiz->parseQuestions(string)
#4 /srv/mediawiki/php-1.30.0-wmf.7/extensions/Quiz/Quiz.hooks.php(28): Quiz->parseQuiz(string)
#5 /srv/mediawiki/php-1.30.0-wmf.7/includes/parser/Parser.php(3882): QuizHooks::renderQuiz(string, array, Parser, PPFrame_Hash)
#6 /srv/mediawiki/php-1.30.0-wmf.7/includes/parser/Preprocessor_Hash.php(1146): Parser->extensionSubstitution(array, PPFrame_Hash)
#7 /srv/mediawiki/php-1.30.0-wmf.7/includes/parser/Parser.php(2951): PPFrame_Hash->expand(PPNode_Hash_Tree, integer)
#8 /srv/mediawiki/php-1.30.0-wmf.7/includes/parser/Parser.php(1306): Parser->replaceVariables(string)
#9 /srv/mediawiki/php-1.30.0-wmf.7/includes/parser/Parser.php(451): Parser->internalParse(string)
#10 /srv/mediawiki/php-1.30.0-wmf.7/includes/StubObject.php(113): Parser->parse(string, Title, ParserOptions, boolean, boolean, integer)
#11 /srv/mediawiki/php-1.30.0-wmf.7/includes/StubObject.php(139): StubObject->_call(string, array)
#12 /srv/mediawiki/php-1.30.0-wmf.7/includes/content/WikitextContent.php(330): StubObject->__call(string, array)
#13 /srv/mediawiki/php-1.30.0-wmf.7/includes/content/AbstractContent.php(497): WikitextContent->fillParserOutput(Title, integer, ParserOptions, boolean, ParserOutput)
#14 /srv/mediawiki/php-1.30.0-wmf.7/includes/poolcounter/PoolWorkArticleView.php(140): AbstractContent->getParserOutput(Title, integer, ParserOptions)
#15 /srv/mediawiki/php-1.30.0-wmf.7/includes/poolcounter/PoolCounterWork.php(123): PoolWorkArticleView->doWork()
#16 /srv/mediawiki/php-1.30.0-wmf.7/includes/page/Article.php(586): PoolCounterWork->execute()
#17 /srv/mediawiki/php-1.30.0-wmf.7/includes/actions/ViewAction.php(68): Article->view()
#18 /srv/mediawiki/php-1.30.0-wmf.7/includes/MediaWiki.php(499): ViewAction->show()
#19 /srv/mediawiki/php-1.30.0-wmf.7/includes/MediaWiki.php(293): MediaWiki->performAction(Article, Title)
#20 /srv/mediawiki/php-1.30.0-wmf.7/includes/MediaWiki.php(862): MediaWiki->performRequest()
#21 /srv/mediawiki/php-1.30.0-wmf.7/includes/MediaWiki.php(523): MediaWiki->main()
#22 /srv/mediawiki/php-1.30.0-wmf.7/index.php(43): MediaWiki->run()
#23 /srv/mediawiki/w/index.php(3): include(string)
#24 {main}The following quiz code is causing the page display to return a "BadMethodCallException":
<quiz display=simple>
{Primera pregunta de prueba para validar [[phab:T166439|T166439]] - Quiz extension can't take zero as an answer even if it it correct
|type="{}"}
Este es el texto de la pregunta. Y este es el espacio para responder: { 0 }
</quiz>It is currently present in esWV sandbox: https://es.wikiversity.org/wiki/Wikiversidad:Zona_de_pruebas
Before the code was not taking the answer but it was not generating the exception.