Exception encountered, of type &quot;Error&quot;<br />
[546a139e] /w/index.php?title=Special:Upload&amp;wpDestFile=pic-katyw.jpg   Error from line 653 of /home/aaronpk/wiki.projectnerdhaus.com/w/includes/exception/MWExceptionHandler.php: Class 'FormatJson' not found<br />
Backtrace:<br />
#0 /home/aaronpk/wiki.projectnerdhaus.com/w/includes/exception/MWExceptionHandler.php(241): MWExceptionHandler::logError(ErrorException, string)<br />
#1 /home/aaronpk/wiki.projectnerdhaus.com/w/includes/AutoLoader.php(90): MWExceptionHandler::handleError(integer, string, string, integer, array)<br />
#2 /home/aaronpk/wiki.projectnerdhaus.com/w/includes/AutoLoader.php(90): require()<br />
#3 [internal function]: AutoLoader::autoload(string)<br />
#4 /home/aaronpk/wiki.projectnerdhaus.com/w/includes/Xml.php(668): spl_autoload_call(string)<br />
#5 /home/aaronpk/wiki.projectnerdhaus.com/w/includes/Xml.php(684): Xml::encodeJsVar(array, boolean)<br />
#6 /home/aaronpk/wiki.projectnerdhaus.com/w/includes/OutputPage.php(3086): Xml::encodeJsCall(string, array)<br />
#7 /home/aaronpk/wiki.projectnerdhaus.com/w/includes/OutputPage.php(3146): OutputPage-&gt;getScriptsForBottomQueue()<br />
#8 /home/aaronpk/wiki.projectnerdhaus.com/w/includes/skins/Skin.php(619): OutputPage-&gt;getBottomScripts()<br />
#9 /home/aaronpk/wiki.projectnerdhaus.com/w/includes/skins/SkinTemplate.php(427): Skin-&gt;bottomScripts()<br />
#10 /home/aaronpk/wiki.projectnerdhaus.com/w/includes/skins/SkinTemplate.php(240): SkinTemplate-&gt;prepareQuickTemplate(OutputPage)<br />
#11 /home/aaronpk/wiki.projectnerdhaus.com/w/includes/OutputPage.php(2326): SkinTemplate-&gt;outputPage()<br />
#12 /home/aaronpk/wiki.projectnerdhaus.com/w/includes/exception/PermissionsError.php(56): OutputPage-&gt;output()<br />
#13 /home/aaronpk/wiki.projectnerdhaus.com/w/includes/MediaWiki.php(514): PermissionsError-&gt;report()<br />
#14 /home/aaronpk/wiki.projectnerdhaus.com/w/index.php(41): MediaWiki-&gt;run()<br />
#15 {main}<br />