Fatal error: PHP notice in file /srv/www/oldforum/htdocs/wcf/lib/system/event/listener/UOTListener.class.php (76): Undefined variable: profileID

Information:

error message: PHP notice in file /srv/www/oldforum/htdocs/wcf/lib/system/event/listener/UOTListener.class.php (76): Undefined variable: profileID
error code: 0
file: /srv/www/oldforum/htdocs/wcf/lib/system/WCF.class.php (255)
php version: 5.6.37-1+ubuntu16.04.1+deb.sury.org+1
wcf version: 1.0.10 (Horizon)
date: Mon, 22 Apr 2019 05:15:11 +0000
request: /index.php?page=User&userID=969&s=1b0dcefea2559cde0924bc039c83e4c05074be30
referer:

Stacktrace:

#0 /srv/www/oldforum/htdocs/wcf/lib/system/event/listener/UOTListener.class.php(76): WCF::handleError(8, 'Undefined varia...', '/srv/www/oldfor...', 76, Array)
#1 /srv/www/oldforum/htdocs/wcf/lib/system/event/EventHandler.class.php(117): UOTListener->execute(Object(UserPage), 'UserPage', 'readParameters')
#2 /srv/www/oldforum/htdocs/wcf/lib/system/event/EventHandler.class.php(142): EventHandler::executeInheritedActions(Object(UserPage), 'readParameters', 'UserPage', 'readParameters@...')
#3 /srv/www/oldforum/htdocs/wcf/lib/page/AbstractPage.class.php(44): EventHandler::fireAction(Object(UserPage), 'readParameters')
#4 /srv/www/oldforum/htdocs/wcf/lib/page/UserPage.class.php(44): AbstractPage->readParameters()
#5 /srv/www/oldforum/htdocs/wcf/lib/page/AbstractPage.class.php(35): UserPage->readParameters()
#6 /srv/www/oldforum/htdocs/wcf/lib/page/UserPage.class.php(37): AbstractPage->__construct()
#7 /srv/www/oldforum/htdocs/wcf/lib/util/RequestHandler.class.php(63): UserPage->__construct()
#8 /srv/www/oldforum/htdocs/wcf/lib/util/RequestHandler.class.php(91): RequestHandler->__construct('User', Array, 'page')
#9 /srv/www/oldforum/htdocs/index.php(8): RequestHandler::handle(Array)
#10 {main}