Exception encountered, of type &quot;Error&quot;<br />
[b5b9ea65] /mediawiki-1.26.0/index.php?oldid=12799&amp;title=Lair_worm   Error from line 653 of /home/foxwarrior/public_html/mediawiki-1.26.0/includes/exception/MWExceptionHandler.php: Class 'FormatJson' not found<br />
Backtrace:<br />
#0 /home/foxwarrior/public_html/mediawiki-1.26.0/includes/exception/MWExceptionHandler.php(241): MWExceptionHandler::logError(ErrorException, string)<br />
#1 /home/foxwarrior/public_html/mediawiki-1.26.0/includes/AutoLoader.php(90): MWExceptionHandler::handleError(integer, string, string, integer, array)<br />
#2 /home/foxwarrior/public_html/mediawiki-1.26.0/includes/AutoLoader.php(90): require()<br />
#3 [internal function]: AutoLoader::autoload(string)<br />
#4 /home/foxwarrior/public_html/mediawiki-1.26.0/includes/exception/MWExceptionHandler.php(622): spl_autoload_call(string)<br />
#5 /home/foxwarrior/public_html/mediawiki-1.26.0/includes/exception/MWExceptionHandler.php(179): MWExceptionHandler::logException(MWException)<br />
#6 /home/foxwarrior/public_html/mediawiki-1.26.0/includes/MediaWiki.php(485): MWExceptionHandler::handleException(MWException)<br />
#7 /home/foxwarrior/public_html/mediawiki-1.26.0/index.php(41): MediaWiki-&gt;run()<br />
#8 {main}<br />