Information:

error message: PHP warning in file /mnt/web019/d1/58/51859358/htdocs/Forum/wcf/lib/data/message/bbcode/MessageParser.class.php (135): preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
error code: 0
file: /mnt/web019/d1/58/51859358/htdocs/Forum/wcf/lib/system/WCF.class.php (255)
php version: 7.3.4
wcf version: 1.0.11 pl 1 (Horizon)
date: Thu, 25 Apr 2019 18:32:00 +0000
request: /index.php?page=Thread&threadID=8&s=e0b69de07aa54eb51c12e877803280e37975c234
referer:

Stacktrace:

#0 [internal function]: WCF::handleError(2, 'preg_replace():...', '/mnt/web019/d1/...', 135, Array)
#1 /mnt/web019/d1/58/51859358/htdocs/Forum/wcf/lib/data/message/bbcode/MessageParser.class.php(135): preg_replace('~(\\[(code|php|j...', '$this->cacheCod...', '[youtube]http:/...')
#2 /mnt/web019/d1/58/51859358/htdocs/Forum/wcf/lib/data/message/bbcode/MessageParser.class.php(62): MessageParser->cacheCodes('[youtube]http:/...')
#3 /mnt/web019/d1/58/51859358/htdocs/Forum/lib/data/post/ViewablePost.class.php(59): MessageParser->parse('[youtube]http:/...', '1', '0', '1', true)
#4 /mnt/web019/d1/58/51859358/htdocs/Forum/wcf/templates/compiled/38_3_3_thread.php(361): ViewablePost->getFormattedMessage()
#5 /mnt/web019/d1/58/51859358/htdocs/Forum/wcf/lib/system/template/Template.class.php(243): include('/mnt/web019/d1/...')
#6 /mnt/web019/d1/58/51859358/htdocs/Forum/wcf/lib/page/AbstractPage.class.php(84): Template->display('thread')
#7 /mnt/web019/d1/58/51859358/htdocs/Forum/wcf/lib/page/AbstractPage.class.php(36): AbstractPage->show()
#8 /mnt/web019/d1/58/51859358/htdocs/Forum/wcf/lib/util/RequestHandler.class.php(63): AbstractPage->__construct()
#9 /mnt/web019/d1/58/51859358/htdocs/Forum/wcf/lib/util/RequestHandler.class.php(91): RequestHandler->__construct('ThreadPage', Array, 'page')
#10 /mnt/web019/d1/58/51859358/htdocs/Forum/index.php(8): RequestHandler::handle(Array)
#11 {main}