Exception encountered, of type &quot;Error&quot;<br />
[ZHMw0lhibKanNLDEljgYXwAAAAo] /index.php?title=Special:Contributions/Wremes&amp;offset=&amp;limit=100&amp;target=Wremes   Error from line 663 of /www/htdocs/brucon/2015/includes/exception/MWExceptionHandler.php: Class 'FormatJson' not found<br />
Backtrace:<br />
#0 /www/htdocs/brucon/2015/includes/exception/MWExceptionHandler.php(242): MWExceptionHandler::logError()<br />
#1 /www/htdocs/brucon/2015/includes/AutoLoader.php(81): MWExceptionHandler::handleError()<br />
#2 /www/htdocs/brucon/2015/includes/AutoLoader.php(81): require()<br />
#3 [internal function]: AutoLoader::autoload()<br />
#4 /www/htdocs/brucon/2015/includes/Xml.php(668): spl_autoload_call()<br />
#5 /www/htdocs/brucon/2015/includes/Xml.php(684): Xml::encodeJsVar()<br />
#6 /www/htdocs/brucon/2015/includes/OutputPage.php(3071): Xml::encodeJsCall()<br />
#7 /www/htdocs/brucon/2015/includes/OutputPage.php(3130): OutputPage-&gt;getScriptsForBottomQueue()<br />
#8 /www/htdocs/brucon/2015/includes/skins/Skin.php(596): OutputPage-&gt;getBottomScripts()<br />
#9 /www/htdocs/brucon/2015/includes/skins/SkinTemplate.php(458): Skin-&gt;bottomScripts()<br />
#10 /www/htdocs/brucon/2015/includes/skins/SkinTemplate.php(246): SkinTemplate-&gt;prepareQuickTemplate()<br />
#11 /www/htdocs/brucon/2015/includes/OutputPage.php(2335): SkinTemplate-&gt;outputPage()<br />
#12 /www/htdocs/brucon/2015/includes/MediaWiki.php(743): OutputPage-&gt;output()<br />
#13 /www/htdocs/brucon/2015/includes/MediaWiki.php(509): MediaWiki-&gt;main()<br />
#14 /www/htdocs/brucon/2015/index.php(43): MediaWiki-&gt;run()<br />
#15 {main}<br />