Fatal error: Unable to load cache resource 'board'

Information:

error message: Unable to load cache resource 'board'
error code: 0
file: /srv/www/htdocs/forumprofi.de/backend/files/software/WBBLite/html/wcf/lib/system/cache/CacheHandler.class.php (214)
php version: 5.2.17
wcf version: 1.0.11 pl 3 (Horizon)
date: Sat, 24 Aug 2019 22:00:53 +0000
request: /index.php?page=Thread&postID=108187
referer:

Stacktrace:

#0 /srv/www/htdocs/forumprofi.de/backend/files/software/WBBLite/html/wcf/lib/system/cache/CacheHandler.class.php(196): CacheHandler->loadCacheFile(Array)
#1 /srv/www/htdocs/forumprofi.de/backend/files/software/WBBLite/html/wcf/lib/system/cache/CacheHandler.class.php(155): CacheHandler->load(Array)
#2 /srv/www/htdocs/forumprofi.de/backend/files/software/WBBLite/html/lib/data/board/Board.class.php(155): CacheHandler->get('board', 'boards')
#3 /srv/www/htdocs/forumprofi.de/backend/files/software/WBBLite/html/lib/page/ThreadPage.class.php(48): Board::getBoard('3')
#4 /srv/www/htdocs/forumprofi.de/backend/files/software/WBBLite/html/wcf/lib/page/AbstractPage.class.php(35): ThreadPage->readParameters()
#5 /srv/www/htdocs/forumprofi.de/backend/files/software/WBBLite/html/wcf/lib/util/RequestHandler.class.php(63): AbstractPage->__construct()
#6 /srv/www/htdocs/forumprofi.de/backend/files/software/WBBLite/html/wcf/lib/util/RequestHandler.class.php(91): RequestHandler->__construct('Thread', Array, 'page')
#7 /srv/www/htdocs/forumprofi.de/backend/files/software/WBBLite/html/index.php(8): RequestHandler::handle(Array)
#8 /srv/www/htdocs/forumprofi.de/backend/files/software/WBBLite/installations/main2/npxptc-4s6e-538/index.php(5): require_once('/srv/www/htdocs...')
#9 {main}