Exception encountered, of type &quot;Error&quot;<br />
[c02675afa59e2a4156aa35a1] /api.php?action=query&amp;affrom=B&amp;afprop=ids%7Ctitle&amp;list=allfileusages   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(451): SyntaxHighlight_GeSHi::highlight(string, string)<br />
#1 /usr/share/nginx/mediawiki-atom/mediawiki-1.27-atom/includes/Hooks.php(195): SyntaxHighlight_GeSHi::onApiFormatHighlight(DerivativeContext, string, string, string)<br />
#2 /usr/share/nginx/mediawiki-atom/mediawiki-1.27-atom/includes/api/ApiFormatBase.php(244): Hooks::run(string, array)<br />
#3 /usr/share/nginx/mediawiki-atom/mediawiki-1.27-atom/includes/api/ApiMain.php(1584): ApiFormatBase-&gt;closePrinter()<br />
#4 /usr/share/nginx/mediawiki-atom/mediawiki-1.27-atom/includes/api/ApiMain.php(1372): ApiMain-&gt;printResult(boolean)<br />
#5 /usr/share/nginx/mediawiki-atom/mediawiki-1.27-atom/includes/api/ApiMain.php(474): ApiMain-&gt;executeAction()<br />
#6 /usr/share/nginx/mediawiki-atom/mediawiki-1.27-atom/includes/api/ApiMain.php(440): ApiMain-&gt;executeActionWithErrorHandling()<br />
#7 /usr/share/nginx/mediawiki-atom/mediawiki-1.27-atom/api.php(94): ApiMain-&gt;execute()<br />
#8 {main}<br />