Fatal error: PHP notice in file /var/syscp/webs/sigi/forum/lib/page/BannerRotationForwardsPage.class.php (27): Undefined property: BannerRotationForwardsPage::$refID

Information:

error message: PHP notice in file /var/syscp/webs/sigi/forum/lib/page/BannerRotationForwardsPage.class.php (27): Undefined property: BannerRotationForwardsPage::$refID
error code: 0
file: /var/syscp/webs/sigi/forum/wcf/lib/system/WCF.class.php (255)
php version: 5.4.45-0+deb7u14
wcf version: 1.0.11 pl 4 (Horizon)
date: Wed, 24 Apr 2019 08:10:46 +0000
request: /forum/index.php?page=BannerRotationForwards&refID=37&s=33e7b2eb70d60fb14040413da0d6a559e2e70665
referer:

Stacktrace:

#0 /var/syscp/webs/sigi/forum/lib/page/BannerRotationForwardsPage.class.php(27): WCF::handleError(8, 'Undefined prope...', '/var/syscp/webs...', 27, Array)
#1 /var/syscp/webs/sigi/forum/wcf/lib/page/AbstractPage.class.php(36): BannerRotationForwardsPage->show()
#2 /var/syscp/webs/sigi/forum/wcf/lib/util/RequestHandler.class.php(63): AbstractPage->__construct()
#3 /var/syscp/webs/sigi/forum/wcf/lib/util/RequestHandler.class.php(91): RequestHandler->__construct('BannerRotationF...', Array, 'page')
#4 /var/syscp/webs/sigi/forum/index.php(8): RequestHandler::handle(Array)
#5 {main}