R_MODE', 1); ?> Fatal error: PHP warning in file /usr/www/users/herbert/wbb2/wcf/lib/util/HeaderUtil.class.php (98): Cannot modify header information - headers already sent by (output started at /usr/www/users/herbert/wbb2/options.inc.php:128944)

Fatal error: PHP warning in file /usr/www/users/herbert/wbb2/wcf/lib/util/HeaderUtil.class.php (98): Cannot modify header information - headers already sent by (output started at /usr/www/users/herbert/wbb2/options.inc.php:128944)

Information:

error message: PHP warning in file /usr/www/users/herbert/wbb2/wcf/lib/util/HeaderUtil.class.php (98): Cannot modify header information - headers already sent by (output started at /usr/www/users/herbert/wbb2/options.inc.php:128944)
error code: 0
file: /usr/www/users/herbert/wbb2/wcf/lib/system/WCF.class.php (281)
php version: 5.6.36
wcf version: 1.1.10 pl 2 (Tempest)
date: Mon, 16 Jul 2018 19:57:42 +0000
request: /wbb2/index.php?page=Thread&threadID=81929&action=lastPost&s=cbedd7cc62125c6ad85c9274ebb3b3e9951fe384
referer:

Stacktrace:

#0 [internal function]: WCF::handleError(2, 'Cannot modify h...', '/usr/www/users/...', 98, Array)
#1 /usr/www/users/herbert/wbb2/wcf/lib/util/HeaderUtil.class.php(98): header('Location: http:...')
#2 /usr/www/users/herbert/wbb2/lib/page/ThreadPage.class.php(320): HeaderUtil::redirect('index.php?page=...', true, true)
#3 /usr/www/users/herbert/wbb2/lib/page/ThreadPage.class.php(111): ThreadPage->goToLastPost()
#4 /usr/www/users/herbert/wbb2/wcf/lib/page/AbstractPage.class.php(45): ThreadPage->readParameters()
#5 /usr/www/users/herbert/wbb2/wcf/lib/util/RequestHandler.class.php(64): AbstractPage->__construct()
#6 /usr/www/users/herbert/wbb2/wcf/lib/util/RequestHandler.class.php(92): RequestHandler->__construct('Thread', Array, 'page')
#7 /usr/www/users/herbert/wbb2/index.php(8): RequestHandler::handle(Array)
#8 {main}