[5.2.0 Beta 3] Validation-Fehler im Event-Template

<article class="section calendarEvent userOnlineGroupMarking4"
     data-object-id="2"
     data-is-deleted="0"
     data-is-disabled="0"
     data-is-featured="0"
     data-can-view-deleted-event="true"
     data-can-trash-event="true"
     data-can-restore-event="true"
     data-can-delete-event="true"
     data-can-edit-event="true"
     data-can-moderate-event="true"
     data-can-set-as-featured="true"
     data-object-id="2" data-object-type="com.woltlab.calendar.likeableEvent" data-user-id="1" aria-labelledby="eventTitle2">
...
</article>