MediaWiki internal error.<br />
<br />
Original exception: [aAceV8QvFDIkIQKAUkcqpwAAhQo] /wiki/Planning:Treeview_skin:Feedback   TypeError: extract(): Argument #1 ($array) must be of type array, string given<br />
Backtrace:<br />
from /var/www/clc-wiki.net/mediawiki/extensions/Hierarchy/UtilityFunctions.php(30)<br />
#0 /var/www/clc-wiki.net/mediawiki/extensions/Hierarchy/UtilityFunctions.php(30): extract()<br />
#1 /var/www/clc-wiki.net/mediawiki/skins/Treeview/Treeview.php(161): wfGetRedirectsTo()<br />
#2 /var/www/clc-wiki.net/mediawiki/skins/Treeview/Treeview.php(592): SkinTreeview-&gt;outputPage_ex()<br />
#3 /var/www/clc-wiki.net/mediawiki/includes/skins/SkinTemplate.php(161): TreeviewTemplate-&gt;execute()<br />
#4 /var/www/clc-wiki.net/mediawiki/includes/skins/SkinTemplate.php(180): SkinTemplate-&gt;generateHTML()<br />
#5 /var/www/clc-wiki.net/mediawiki/includes/skins/Skin.php(683): SkinTemplate-&gt;outputPage()<br />
#6 /var/www/clc-wiki.net/mediawiki/includes/Output/OutputPage.php(3193): Skin-&gt;outputPageFinal()<br />
#7 /var/www/clc-wiki.net/mediawiki/includes/actions/ActionEntryPoint.php(163): MediaWiki\Output\OutputPage-&gt;output()<br />
#8 /var/www/clc-wiki.net/mediawiki/includes/MediaWikiEntryPoint.php(200): MediaWiki\Actions\ActionEntryPoint-&gt;execute()<br />
#9 /var/www/clc-wiki.net/mediawiki/index.php(58): MediaWiki\MediaWikiEntryPoint-&gt;run()<br />
#10 {main}<br />
<br />
Exception caught inside exception handler: [aAceV8QvFDIkIQKAUkcqpwAAhQo] /wiki/Planning:Treeview_skin:Feedback   TypeError: extract(): Argument #1 ($array) must be of type array, string given<br />
Backtrace:<br />
from /var/www/clc-wiki.net/mediawiki/extensions/Hierarchy/UtilityFunctions.php(30)<br />
#0 /var/www/clc-wiki.net/mediawiki/extensions/Hierarchy/UtilityFunctions.php(30): extract()<br />
#1 /var/www/clc-wiki.net/mediawiki/skins/Treeview/Treeview.php(161): wfGetRedirectsTo()<br />
#2 /var/www/clc-wiki.net/mediawiki/skins/Treeview/Treeview.php(592): SkinTreeview-&gt;outputPage_ex()<br />
#3 /var/www/clc-wiki.net/mediawiki/includes/skins/SkinTemplate.php(161): TreeviewTemplate-&gt;execute()<br />
#4 /var/www/clc-wiki.net/mediawiki/includes/skins/SkinTemplate.php(180): SkinTemplate-&gt;generateHTML()<br />
#5 /var/www/clc-wiki.net/mediawiki/includes/skins/Skin.php(683): SkinTemplate-&gt;outputPage()<br />
#6 /var/www/clc-wiki.net/mediawiki/includes/Output/OutputPage.php(3193): Skin-&gt;outputPageFinal()<br />
#7 /var/www/clc-wiki.net/mediawiki/includes/exception/MWExceptionRenderer.php(190): MediaWiki\Output\OutputPage-&gt;output()<br />
#8 /var/www/clc-wiki.net/mediawiki/includes/exception/MWExceptionRenderer.php(109): MWExceptionRenderer::reportHTML()<br />
#9 /var/www/clc-wiki.net/mediawiki/includes/exception/MWExceptionHandler.php(135): MWExceptionRenderer::output()<br />
#10 /var/www/clc-wiki.net/mediawiki/includes/exception/MWExceptionHandler.php(239): MWExceptionHandler::report()<br />
#11 /var/www/clc-wiki.net/mediawiki/includes/MediaWikiEntryPoint.php(222): MWExceptionHandler::handleException()<br />
#12 /var/www/clc-wiki.net/mediawiki/includes/actions/ActionEntryPoint.php(82): MediaWiki\MediaWikiEntryPoint-&gt;handleTopLevelError()<br />
#13 /var/www/clc-wiki.net/mediawiki/includes/MediaWikiEntryPoint.php(206): MediaWiki\Actions\ActionEntryPoint-&gt;handleTopLevelError()<br />
#14 /var/www/clc-wiki.net/mediawiki/index.php(58): MediaWiki\MediaWikiEntryPoint-&gt;run()<br />
#15 {main}<br />