TYPO3 Core

When creating a new task in den scheduler module and save them an exception with "date() expects parameter 2 to be integer, string given" throws.

• Open scheduler module in the backend
• Create new task
• Select any type of task (extbase, console command, ...)
• Add a frequency (e.g. 3600 or * */1 * * *)
• Click on "Save" and "Close" Button
• After saving and rendering the scheduler task overview the error occurs

Affected line in SchedulerModuleController

$nextDate = date($dateFormat, $schedulerRecord['nextexecution']);

TypeError
date() expects parameter 2 to be integer, string given

in SchedulerModuleController.php line 953

                    // Also hide the date if task is disabled (the information doesn't make sense, as it will not run anyway)
                    if ($isRunning || $schedulerRecord['disable']) {
                        $nextDate = '-';
                    } else {
                        $nextDate = date($dateFormat, $schedulerRecord['nextexecution']);
                        if (empty($schedulerRecord['nextexecution'])) {
                            $nextDate = $this->getLanguageService()->getLL('none');
                        } elseif ($schedulerRecord['nextexecution'] < $GLOBALS['EXEC_TIME']) {
                            $labels[] = [