WCF::handleException() Unhandled exception: Class 'wcf\system\cache\builder\UserProfileMenuCacheBuilder' not found

#0 /mnt/web207/e3/41/53950641/htdocs/wcf/lib/system/menu/user/profile/UserProfileMenu.class.php(37): wcf\system\menu\user\profile\UserProfileMenu->loadCache()
#1 /mnt/web207/e3/41/53950641/htdocs/wcf/lib/system/SingletonFactory.class.php(27): wcf\system\menu\user\profile\UserProfileMenu->init()
#2 /mnt/web207/e3/41/53950641/htdocs/wcf/lib/system/SingletonFactory.class.php(56): wcf\system\SingletonFactory->__construct()
#3 /mnt/web207/e3/41/53950641/htdocs/wcf/lib/page/UserPage.class.php(125): wcf\system\SingletonFactory::getInstance()
#4 /mnt/web207/e3/41/53950641/htdocs/wcf/lib/page/AbstractPage.class.php(273): wcf\page\UserPage->readData()
#5 /mnt/web207/e3/41/53950641/htdocs/wcf/lib/page/UserPage.class.php(207): wcf\page\AbstractPage->show()
#6 /mnt/web207/e3/41/53950641/htdocs/wcf/lib/page/AbstractPage.class.php(100): wcf\page\UserPage->show()
#7 /mnt/web207/e3/41/53950641/htdocs/wcf/lib/system/request/Request.class.php(58): wcf\page\AbstractPage->__run()
#8 /mnt/web207/e3/41/53950641/htdocs/wcf/lib/system/request/RequestHandler.class.php(139): wcf\system\request\Request->execute()
#9 /mnt/web207/e3/41/53950641/htdocs/index.php(10): wcf\system\request\RequestHandler->handle('wbb')
#10 {main}