Internal error

[942f96a7a6a71da14134ff1e] /Category:Ireland Error from line 1356 of /var/www/html/aboutus.com/extensions/LocalS3Repo/LocalS3File.php: Call to undefined method File::sha1Base36()

Backtrace:

#0 /var/www/html/aboutus.com/includes/parser/Parser.php(3683): LocalS3File->getSha1()
#1 /var/www/html/aboutus.com/includes/parser/Parser.php(5190): Parser->fetchFileAndTitle(Title, array)
#2 /var/www/html/aboutus.com/includes/parser/Parser.php(2353): Parser->makeImage(Title, array, LinkHolderArray)
#3 /var/www/html/aboutus.com/includes/parser/Parser.php(2105): Parser->replaceInternalLinks2(string)
#4 /var/www/html/aboutus.com/includes/parser/Parser.php(1320): Parser->replaceInternalLinks(string)
#5 /var/www/html/aboutus.com/includes/parser/Parser.php(442): Parser->internalParse(string, boolean, boolean, Title)
#6 /var/www/html/aboutus.com/includes/content/WikitextContent.php(330): Parser->parse(string, Title, ParserOptions, boolean, boolean, integer)
#7 /var/www/html/aboutus.com/includes/content/AbstractContent.php(497): WikitextContent->fillParserOutput(Title, integer, ParserOptions, boolean, ParserOutput)
#8 /var/www/html/aboutus.com/includes/poolcounter/PoolWorkArticleView.php(139): AbstractContent->getParserOutput(Title, integer, ParserOptions)
#9 /var/www/html/aboutus.com/includes/poolcounter/PoolCounterWork.php(123): PoolWorkArticleView->doWork()
#10 /var/www/html/aboutus.com/includes/page/Article.php(650): PoolCounterWork->execute()
#11 /var/www/html/aboutus.com/includes/page/CategoryPage.php(66): Article->view()
#12 /var/www/html/aboutus.com/includes/actions/ViewAction.php(71): CategoryPage->view()
#13 /var/www/html/aboutus.com/includes/MediaWiki.php(495): ViewAction->show()
#14 /var/www/html/aboutus.com/includes/MediaWiki.php(289): MediaWiki->performAction(CategoryPage, Title)
#15 /var/www/html/aboutus.com/includes/MediaWiki.php(851): MediaWiki->performRequest()
#16 /var/www/html/aboutus.com/includes/MediaWiki.php(512): MediaWiki->main()
#17 /var/www/html/aboutus.com/index.php(51): MediaWiki->run()
#18 {main}