TypeError: ActivityUpdate::create(): Argument #9 ($fsId) must be of type integer

Sentry Issue: FOODSHARINGDE-BETA-BACKEND-144

TypeError: Foodsharing\Modules\Activity\DTO\ActivityUpdate::create(): Argument #9 ($fsId) must be of type int, null given, called in /var/www/beta/releases/846/src/Modules/Activity/ActivityTransactions.php on line 337
  File "/src/Modules/Activity/DTO/ActivityUpdate.php", line 79, in Foodsharing\Modules\Activity\DTO\ActivityUpdate::create
    public static function create(
  File "/src/Modules/Activity/ActivityTransactions.php", line 337, in Foodsharing\Modules\Activity\ActivityTransactions::loadForumUpdates
    'forum',
  File "/src/Modules/Activity/ActivityTransactions.php", line 138, in Foodsharing\Modules\Activity\ActivityTransactions::getUpdateData
    $this->loadForumUpdates($page, $hidden_ids['bezirk']),
  File "/src/RestApi/ActivityRestController.php", line 111, in Foodsharing\RestApi\ActivityRestController::getActivityUpdates
    $updates = new ActivityUpdateModel($this->activityTransactions->getUpdateData($page));
  File "/public/index.php", line 34
    $response = $kernel->handle($request);
...
(3 additional frame(s) were not displayed)