Symfony\Component\Debug\Exception\FatalThrowableError: Argument 1 passed to Foodsharing\Lib\Func::niceDate() must be of the type integer, null given, ca...

https://sentry.io/foodsaving-worldwide/foodsharingde-beta/issues/739415761/

Symfony\Component\Debug\Exception\FatalThrowableError: Argument 1 passed to Foodsharing\Lib\Func::niceDate() must be of the type integer, null given, called in /home/deploy/beta-deploy/releases/233/src/Modules/Message/MessageView.php on line 87
  File "src/Lib/Func.php", line 216, in niceDate
    public function niceDate(int $unixTimeStamp, bool $extendWithAbsoluteDate = false): string
  File "src/Modules/Message/MessageView.php", line 87, in conversationList
    $list .= '<li id="convlist-' . $c['id'] . '" class="unread-' . (int)$c['unread'] . '"><a href="#" onclick="' . $click . '(' . $c['id'] . ');return false;"><span class="pics">' . $pics . '</span><span class="names">' . $title . '</span><span class="...
  File "src/Modules/Message/MessageControl.php", line 41, in index
    $this->func->addContent($this->view->convListWrapper($this->view->conversationList($conversations)), CNT_RIGHT);
  File "index.php", line 90
    $obj->index($request, $response);