WCF::handleException() Unhandled exception: Call to a member function countObjects() on null

#0 /data/web/1/000/016/132/17780/htdocs/forum/wcf/lib/page/MultipleLinkPage.class.php(171): wcf\page\MultipleLinkPage->countItems()
#1 /data/web/1/000/016/132/17780/htdocs/forum/wcf/lib/page/MultipleLinkPage.class.php(115): wcf\page\MultipleLinkPage->calculateNumberOfPages()
#2 /data/web/1/000/016/132/17780/htdocs/forum/wcf/lib/page/SortablePage.class.php(54): wcf\page\MultipleLinkPage->readData()
#3 /data/web/1/000/016/132/17780/htdocs/forum/clan/lib/page/ClanListPage.class.php(175): wcf\page\SortablePage->readData()
#4 /data/web/1/000/016/132/17780/htdocs/forum/wcf/lib/page/AbstractPage.class.php(273): clan\page\ClanListPage->readData()
#5 /data/web/1/000/016/132/17780/htdocs/forum/wcf/lib/page/AbstractPage.class.php(100): wcf\page\AbstractPage->show()
#6 /data/web/1/000/016/132/17780/htdocs/forum/wcf/lib/system/request/Request.class.php(58): wcf\page\AbstractPage->__run()
#7 /data/web/1/000/016/132/17780/htdocs/forum/wcf/lib/system/request/RequestHandler.class.php(139): wcf\system\request\Request->execute()
#8 /data/web/1/000/016/132/17780/htdocs/forum/clan/index.php(3): wcf\system\request\RequestHandler->handle('clan')
#9 {main}