Exception encountered, of type &quot;Error&quot;<br />
[ead86e3e6449c9217a450275] /wiki/MediaWiki:Common.js   Error from line 283 of /usr/share/nginx/mediawiki-atom/mediawiki-1.27-atom/extensions/SyntaxHighlight_GeSHi/SyntaxHighlight_GeSHi.class.php: Class 'Symfony\Component\Process\ProcessBuilder' not found<br />
Backtrace:<br />
#0 /usr/share/nginx/mediawiki-atom/mediawiki-1.27-atom/extensions/SyntaxHighlight_GeSHi/SyntaxHighlight_GeSHi.class.php(423): SyntaxHighlight_GeSHi::highlight(string, string)<br />
#1 /usr/share/nginx/mediawiki-atom/mediawiki-1.27-atom/includes/Hooks.php(195): SyntaxHighlight_GeSHi::onContentGetParserOutput(JavaScriptContent, Title, NULL, ParserOptions, boolean, ParserOutput)<br />
#2 /usr/share/nginx/mediawiki-atom/mediawiki-1.27-atom/includes/content/AbstractContent.php(491): Hooks::run(string, array)<br />
#3 /usr/share/nginx/mediawiki-atom/mediawiki-1.27-atom/includes/page/Article.php(1344): AbstractContent-&gt;getParserOutput(Title)<br />
#4 /usr/share/nginx/mediawiki-atom/mediawiki-1.27-atom/includes/page/Article.php(598): Article-&gt;showMissingArticle()<br />
#5 /usr/share/nginx/mediawiki-atom/mediawiki-1.27-atom/includes/actions/ViewAction.php(44): Article-&gt;view()<br />
#6 /usr/share/nginx/mediawiki-atom/mediawiki-1.27-atom/includes/MediaWiki.php(493): ViewAction-&gt;show()<br />
#7 /usr/share/nginx/mediawiki-atom/mediawiki-1.27-atom/includes/MediaWiki.php(288): MediaWiki-&gt;performAction(Article, Title)<br />
#8 /usr/share/nginx/mediawiki-atom/mediawiki-1.27-atom/includes/MediaWiki.php(735): MediaWiki-&gt;performRequest()<br />
#9 /usr/share/nginx/mediawiki-atom/mediawiki-1.27-atom/includes/MediaWiki.php(509): MediaWiki-&gt;main()<br />
#10 /usr/share/nginx/mediawiki-atom/mediawiki-1.27-atom/index.php(43): MediaWiki-&gt;run()<br />
#11 {main}<br />