Fatal error: PHP warning in file /kunden/toeb.de/vote2/wcf/lib/util/HeaderUtil.class.php (15): Cannot modify header information - headers already sent by (output started at /kunden/toeb.de/vote2/muendlich_main.php:6)

Information:

error message: PHP warning in file /kunden/toeb.de/vote2/wcf/lib/util/HeaderUtil.class.php (15): Cannot modify header information - headers already sent by (output started at /kunden/toeb.de/vote2/muendlich_main.php:6)
error code: 0
file: /kunden/toeb.de/vote2/wcf/lib/system/WCF.class.php (251)
php version: 5.2.17
wcf version: 1.0.6
date: Tue, 22 May 2018 05:46:19 +0000
request: /muendlich_main.php
referer:

Stacktrace:

#0 /kunden/toeb.de/vote2/wcf/lib/util/HeaderUtil.class.php(15): WCF::handleError(2, 'Cannot modify h...', '/kunden/toeb.de...', 15, Array)
#1 /kunden/toeb.de/vote2/wcf/lib/system/session/CookieSession.class.php(69): HeaderUtil::setCookie('Set-Cookie: wcf...', false)
#2 /kunden/toeb.de/vote2/wcf/lib/system/session/CookieSession.class.php(41): CookieSession->handleCookie('cookieHash', '485a9a63b6b3a83...')
#3 /kunden/toeb.de/vote2/wcf/lib/system/session/Session.class.php(95): CookieSession->defineConstants()
#4 /kunden/toeb.de/vote2/wcf/lib/system/session/CookieSessionFactory.class.php(91): Session->__construct()
#5 /kunden/toeb.de/vote2/wcf/lib/system/session/SessionFactory.class.php(71): CookieSessionFactory->create(NULL, Array)
#6 /kunden/toeb.de/vote2/board/lib/system/WBBCore.class.php(201): SessionFactory->get()
#7 /kunden/toeb.de/vote2/wcf/lib/system/WCF.class.php(91): WBBCore->initSession()
#8 /kunden/toeb.de/vote2/board/global.php(18): WCF->__construct()
#9 /kunden/toeb.de/vote2/log_head.php(6): require('/kunden/toeb.de...')
#10 /kunden/toeb.de/vote2/muendlich_main.php(24): include('/kunden/toeb.de...')
#11 {main}