PHP 8.4: DateTime::createFromFormat(): Passing null to parameter #2 ($datetime) of type string is deprecated

[Fighter456]

See https://www.woltlab.com/community/thread/317158

Wed, 18 Mar 2026 01:07:43 +0000
Message: DateTime::createFromFormat(): Passing null to parameter #2 ($datetime) of type string is deprecated
PHP version: 8.4.18
WoltLab Suite version: 6.2.2
Request URI: GET /cronjob-perform/
Referrer: https://xxxx-yyy.info/forum/unread-thread-list/
User Agent: Mozilla/5.0 (iPhone; CPU iPhone OS 26_3_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/146.0.7680.40 Mobile/15E148 Safari/604.1
Peak Memory Usage: 2696720/268435456
======
Error Class: wcf\system\exception\ErrorException
Error Message: DateTime::createFromFormat(): Passing null to parameter #2 ($datetime) of type string is deprecated
Error Code: 0
File: /var/www/xxxx-yyy.info/lib/system/WCF.class.php (379)
Extra Information: -
Stack Trace: [{"function":"handleError","class":"wcf\\system\\WCF","type":"::","args":[8192,"DateTime::createFromFormat(): Passing null to parameter #2 ($datetime) of type string is deprecated","\/var\/www\/xxxx-yyy.info\/lib\/system\/event\/listener\/VisitStatisticsDailyCleanUpCronjobListener.class.php",126],"file":"[internal function]","line":"?"},{"file":"\/var\/www\/xxxx-yyy.info\/lib\/system\/event\/listener\/VisitStatisticsDailyCleanUpCronjobListener.class.php","line":126,"function":"createFromFormat","class":"DateTime","type":"::","args":["Y-m-d H:i:s",null]},{"file":"\/var\/www\/xxxx-yyy.info\/lib\/system\/event\/listener\/VisitStatisticsDailyCleanUpCronjobListener.class.php","line":33,"function":"setDailyStats","class":"wcf\\system\\event\\listener\\VisitStatisticsDailyCleanUpCronjobListener","type":"->","args":[null]},{"file":"\/var\/www\/xxxx-yyy.info\/lib\/system\/event\/EventHandler.class.php","line":161,"function":"execute","class":"wcf\\system\\event\\listener\\VisitStatisticsDailyCleanUpCronjobListener","type":"->","args":["wcf\\system\\cronjob\\DailyCleanUpCronjob","wcf\\system\\cronjob\\DailyCleanUpCronjob","execute",[]]},{"file":"\/var\/www\/xxxx-yyy.info\/lib\/system\/event\/EventHandler.class.php","line":225,"function":"executeListeners","class":"wcf\\system\\event\\EventHandler","type":"->","args":[{"calendar\\system\\event\\listener\\CalendarCleanUpListener":"[redacted]","wbb\\system\\event\\listener\\WBBCleanUpListener":"[redacted]","wcf\\system\\event\\listener\\DailyCleanUpMultifactorWebauthnListener":"[redacted]","wcf\\system\\event\\listener\\VisitStatisticsDailyCleanUpCronjobListener":"[redacted]"},"wcf\\system\\cronjob\\DailyCleanUpCronjob","wcf\\system\\cronjob\\DailyCleanUpCronjob","execute",[]]},{"file":"\/var\/www\/xxxx-yyy.info\/lib\/system\/cronjob\/AbstractCronjob.class.php","line":22,"function":"fireAction","class":"wcf\\system\\event\\EventHandler","type":"->","args":["wcf\\system\\cronjob\\DailyCleanUpCronjob","execute"]},{"file":"\/var\/www\/xxxx-yyy.info\/lib\/system\/cronjob\/DailyCleanUpCronjob.class.php","line":27,"function":"execute","class":"wcf\\system\\cronjob\\AbstractCronjob","type":"->","args":["wcf\\data\\cronjob\\Cronjob"]},{"file":"\/var\/www\/xxxx-yyy.info\/lib\/system\/cronjob\/CronjobScheduler.class.php","line":283,"function":"execute","class":"wcf\\system\\cronjob\\DailyCleanUpCronjob","type":"->","args":["wcf\\data\\cronjob\\Cronjob"]},{"file":"\/var\/www\/xxxx-yyy.info\/lib\/system\/cronjob\/CronjobScheduler.class.php","line":89,"function":"executeCronjob","class":"wcf\\system\\cronjob\\CronjobScheduler","type":"->","args":["wcf\\data\\cronjob\\CronjobEditor","wcf\\data\\cronjob\\log\\CronjobLogEditor"]},{"file":"\/var\/www\/xxxx-yyy.info\/lib\/action\/CronjobPerformAction.class.php","line":23,"function":"executeCronjobs","class":"wcf\\system\\cronjob\\CronjobScheduler","type":"->","args":[]},{"file":"\/var\/www\/xxxx-yyy.info\/lib\/system\/request\/Request.class.php","line":52,"function":"handle","class":"wcf\\action\\CronjobPerformAction","type":"->","args":["Laminas\\Diactoros\\ServerRequest"]},{"file":"\/var\/www\/xxxx-yyy.info\/lib\/http\/middleware\/HandleValinorMappingErrors.class.php","line":35,"function":"handle","class":"wcf\\system\\request\\Request","type":"->","args":["Laminas\\Diactoros\\ServerRequest"]},{"file":"\/var\/www\/xxxx-yyy.info\/lib\/system\/request\/RequestHandler.class.php","line":168,"function":"process","class":"wcf\\http\\Pipeline","type":"->","args":["Laminas\\Diactoros\\ServerRequest","wcf\\http\\RequestHandlerMiddleware"]},{"file":"\/var\/www\/xxxx-yyy.info\/index.php","line":10,"function":"handle","class":"wcf\\system\\request\\RequestHandler","type":"->","args":["wcf"]}]