Fatal error: PHP notice in file /srv/www/vhosts/ik-com.de/httpdocs/wcf/lib/system/auth/UserAuthDefault.class.php (56): Use of undefined constant COOKIE_PREFIX - assumed 'COOKIE_PREFIX'

Fatal error: PHP notice in file /srv/www/vhosts/ik-com.de/httpdocs/wcf/lib/system/auth/UserAuthDefault.class.php (56): Use of undefined constant COOKIE_PREFIX - assumed 'COOKIE_PREFIX'

Information:

error message: PHP notice in file /srv/www/vhosts/ik-com.de/httpdocs/wcf/lib/system/auth/UserAuthDefault.class.php (56): Use of undefined constant COOKIE_PREFIX - assumed 'COOKIE_PREFIX'
error code: 0
file: /srv/www/vhosts/ik-com.de/httpdocs/wcf/lib/system/WCF.class.php (255)
php version: 5.4.45-0+deb7u14
wcf version: 1.0.11 pl 3 (Horizon)
date: Sat, 18 May 2024 01:21:11 +0000
request: /index.php?page=Thread&threadID=2393&s=997cab876517407a7d47611cdf4579d088488deb
referer:

Stacktrace:

#0 /srv/www/vhosts/ik-com.de/httpdocs/wcf/lib/system/auth/UserAuthDefault.class.php(56): WCF::handleError(8, 'Use of undefine...', '/srv/www/vhosts...', 56, Array)
#1 /srv/www/vhosts/ik-com.de/httpdocs/wcf/lib/system/session/CookieSessionFactory.class.php(34): UserAuthDefault->loginAutomatically(true, 'WBBUserSession')
#2 /srv/www/vhosts/ik-com.de/httpdocs/wcf/lib/system/session/SessionFactory.class.php(71): CookieSessionFactory->create()
#3 /srv/www/vhosts/ik-com.de/httpdocs/lib/system/WBBCore.class.php(201): SessionFactory->get()
#4 /srv/www/vhosts/ik-com.de/httpdocs/wcf/lib/system/WCF.class.php(91): WBBCore->initSession()
#5 /srv/www/vhosts/ik-com.de/httpdocs/global.php(18): WCF->__construct()
#6 /srv/www/vhosts/ik-com.de/httpdocs/index.php(53): require_once('/srv/www/vhosts...')
#7 {main}