Exception encountered, of type "Error"
[fe518475b379c6be1e000652] /index.php?title=Prova&oldid=1368 Error from line 35 of /var/lib/mediawiki/extensions/Exam.php: Class 'ExamDB' not found
Backtrace:
#0 /var/lib/mediawiki/includes/parser/Parser.php(4279): SelectCourse(string, array, Parser, PPFrame_DOM)
#1 /var/lib/mediawiki/includes/parser/Preprocessor_DOM.php(1260): Parser->extensionSubstitution(array, PPFrame_DOM)
#2 /var/lib/mediawiki/includes/parser/Parser.php(3380): PPFrame_DOM->expand(DOMElement, integer)
#3 /var/lib/mediawiki/includes/parser/Parser.php(1261): Parser->replaceVariables(string)
#4 /var/lib/mediawiki/includes/parser/Parser.php(452): Parser->internalParse(string)
#5 /var/lib/mediawiki/includes/content/WikitextContent.php(331): Parser->parse(string, Title, ParserOptions, boolean, boolean, integer)
#6 /var/lib/mediawiki/includes/content/AbstractContent.php(497): WikitextContent->fillParserOutput(Title, integer, ParserOptions, boolean, ParserOutput)
#7 /var/lib/mediawiki/includes/poolcounter/PoolWorkArticleView.php(139): AbstractContent->getParserOutput(Title, integer, ParserOptions)
#8 /var/lib/mediawiki/includes/poolcounter/PoolCounterWork.php(123): PoolWorkArticleView->doWork()
#9 /var/lib/mediawiki/includes/page/Article.php(673): PoolCounterWork->execute()
#10 /var/lib/mediawiki/includes/actions/ViewAction.php(44): Article->view()
#11 /var/lib/mediawiki/includes/MediaWiki.php(493): ViewAction->show()
#12 /var/lib/mediawiki/includes/MediaWiki.php(288): MediaWiki->performAction(Article, Title)
#13 /var/lib/mediawiki/includes/MediaWiki.php(735): MediaWiki->performRequest()
#14 /var/lib/mediawiki/includes/MediaWiki.php(509): MediaWiki->main()
#15 /var/lib/mediawiki/index.php(43): MediaWiki->run()
#16 {main}