[Beta 8] Pages Crash

TypeError: IPS\cms\Pages\Page::getSortableName(): Return value must be of type string, null returned (0)
#0 /var/www/vhosts/[MY SITE HERE]/applications/cms/sources/Pages/Folder.php(61): IPS\cms\Pages\Page->getSortableName()
#1 /var/www/vhosts/[MY SITE HERE]/applications/cms/modules/admin/pages/pages.php(391): IPS\cms\Pages\Folder::munge()
#2 /var/www/vhosts/[MY SITE HERE]/applications/cms/modules/admin/pages/pages.php(107): IPS\cms\modules\admin\pages\pages::getRowsForTree()
#3 /var/www/vhosts/[MY SITE HERE]/system/Helpers/Tree/Tree.php(144): IPS\cms\modules\admin\pages\pages->IPS\cms\modules\admin\pages\{closure}()
#4 /var/www/vhosts/[MY SITE HERE]/applications/cms/modules/admin/pages/pages.php(103): IPS\Helpers\Tree\Tree->__toString()
#5 /var/www/vhosts/[MY SITE HERE]/system/Dispatcher/Controller.php(139): IPS\cms\modules\admin\pages\pages->manage()
#6 /var/www/vhosts/[MY SITE HERE]/system/Node/Controller.php(117): IPS\Dispatcher\Controller->execute()
#7 /var/www/vhosts/[MY SITE HERE]/applications/cms/modules/admin/pages/pages.php(79): IPS\Node\Controller->execute()
#8 /var/www/vhosts/[MY SITE HERE]/system/Dispatcher/Dispatcher.php(169): IPS\cms\modules\admin\pages\pages->execute()
#9 /var/www/vhosts/[MY SITE HERE]/admin/index.php(15): IPS\Dispatcher->run()
#10 {main}