Fatal error: PHP notice in file /www/htdocs/v080184/wbb3/wcf/lib/system/security/SecurityHandler.class.php (338): Array to string conversion

Information:

error message: PHP notice in file /www/htdocs/v080184/wbb3/wcf/lib/system/security/SecurityHandler.class.php (338): Array to string conversion
error code: 0
file: /www/htdocs/v080184/wbb3/wcf/lib/system/WCF.class.php (255)
php version: 5.6.40-nmm8
wcf version: 1.0.11 pl 1 (Horizon)
date: Sat, 18 May 2024 05:54:25 +0000
request: /wbb3/wbb/index.php?form=UserLogin&s=8f749341e7cae88caacb32bcdb84708291bb763c
referer:

Stacktrace:

#0 /www/htdocs/v080184/wbb3/wcf/lib/system/security/SecurityHandler.class.php(338): WCF::handleError(8, 'Array to string...', '/www/htdocs/v08...', 338, Array)
#1 /www/htdocs/v080184/wbb3/wcf/lib/system/security/SecurityHandler.class.php(274): SecurityHandler->generateJournal('flood')
#2 /www/htdocs/v080184/wbb3/wcf/lib/system/security/SecurityHandler.class.php(252): SecurityHandler->attackJournal('flood')
#3 /www/htdocs/v080184/wbb3/wcf/lib/system/security/plugins/floodcontrol/floodcontrol.class.php(133): SecurityHandler->accessDenied('flood', Array)
#4 /www/htdocs/v080184/wbb3/wcf/lib/system/security/plugins/floodcontrol/floodcontrol.class.php(50): Floodcontrol->accessDenied('30')
#5 /www/htdocs/v080184/wbb3/wcf/lib/system/security/plugins/floodcontrol/floodcontrol.class.php(41): Floodcontrol->calculateFlood('30')
#6 /www/htdocs/v080184/wbb3/wcf/lib/system/security/SecurityHandler.class.php(188): Floodcontrol->execute(Object(SecurityHandler), 'floodcontrol')
#7 /www/htdocs/v080184/wbb3/wcf/lib/system/security/SecurityHandler.class.php(52): SecurityHandler->fireActions()
#8 /www/htdocs/v080184/wbb3/wcf/lib/system/event/listener/SecurityListener.class.php(34): SecurityHandler->systemCore()
#9 /www/htdocs/v080184/wbb3/wcf/lib/system/event/EventHandler.class.php(117): SecurityListener->execute(Object(UserLoginForm), 'UserLoginForm', 'readParameters')
#10 /www/htdocs/v080184/wbb3/wcf/lib/system/event/EventHandler.class.php(142): EventHandler::executeInheritedActions(Object(UserLoginForm), 'readParameters', 'UserLoginForm', 'readParameters@...')
#11 /www/htdocs/v080184/wbb3/wcf/lib/page/AbstractPage.class.php(44): EventHandler::fireAction(Object(UserLoginForm), 'readParameters')
#12 /www/htdocs/v080184/wbb3/wcf/lib/form/UserLoginForm.class.php(24): AbstractPage->readParameters()
#13 /www/htdocs/v080184/wbb3/wcf/lib/page/AbstractPage.class.php(35): UserLoginForm->readParameters()
#14 /www/htdocs/v080184/wbb3/wcf/lib/acp/form/LoginForm.class.php(30): AbstractPage->__construct()
#15 /www/htdocs/v080184/wbb3/wcf/lib/util/RequestHandler.class.php(63): LoginForm->__construct()
#16 /www/htdocs/v080184/wbb3/wcf/lib/util/RequestHandler.class.php(94): RequestHandler->__construct('UserLogin', Array, 'form')
#17 /www/htdocs/v080184/wbb3/wbb/index.php(8): RequestHandler::handle(Array)
#18 {main}