Internal error

[ZfkZgVBnGGpMa2vyP3kmBwAAAAs] /cbg/index.php?title=Welcome&oldid=3431 Error from line 398 of /var/www/html/prod/cbg/extensions/NewsBulletins/NewsBulletins.php: Call to undefined method Article::getContent()

Backtrace:

#0 /var/www/html/prod/cbg/extensions/NewsBulletins/NewsBulletins.php(244): newsBulletins->showBulletins()
#1 /var/www/html/prod/cbg/includes/parser/Parser.php(3888): createNewsBulletins(string, array, Parser, PPFrame_DOM)
#2 /var/www/html/prod/cbg/includes/parser/Preprocessor_DOM.php(1362): Parser->extensionSubstitution(array, PPFrame_DOM)
#3 /var/www/html/prod/cbg/includes/parser/Parser.php(2942): PPFrame_DOM->expand(DOMElement, integer)
#4 /var/www/html/prod/cbg/includes/parser/Parser.php(1293): Parser->replaceVariables(string)
#5 /var/www/html/prod/cbg/includes/parser/Parser.php(443): Parser->internalParse(string)
#6 /var/www/html/prod/cbg/includes/content/WikitextContent.php(323): Parser->parse(string, Title, ParserOptions, boolean, boolean, integer)
#7 /var/www/html/prod/cbg/includes/content/AbstractContent.php(516): WikitextContent->fillParserOutput(Title, integer, ParserOptions, boolean, ParserOutput)
#8 /var/www/html/prod/cbg/includes/poolcounter/PoolWorkArticleView.php(144): AbstractContent->getParserOutput(Title, integer, ParserOptions)
#9 /var/www/html/prod/cbg/includes/poolcounter/PoolCounterWork.php(123): PoolWorkArticleView->doWork()
#10 /var/www/html/prod/cbg/includes/page/Article.php(604): PoolCounterWork->execute()
#11 /var/www/html/prod/cbg/includes/actions/ViewAction.php(68): Article->view()
#12 /var/www/html/prod/cbg/includes/MediaWiki.php(500): ViewAction->show()
#13 /var/www/html/prod/cbg/includes/MediaWiki.php(294): MediaWiki->performAction(Article, Title)
#14 /var/www/html/prod/cbg/includes/MediaWiki.php(818): MediaWiki->performRequest()
#15 /var/www/html/prod/cbg/includes/MediaWiki.php(524): MediaWiki->main()
#16 /var/www/html/prod/cbg/index.php(42): MediaWiki->run()
#17 {main}