java.lang.ClassCastException: class org.ametys.cms.repository.comment.RichTextComment cannot be cast to class org.ametys.cms.repository.comment.Comment (org.ametys.cms.repository.comment.RichTextComment and org.ametys.cms.repository.comment.Comment are in unnamed module of loader org.apache.catalina.loader.ParallelWebappClassLoader @14a3a66c)
	at org.ametys.plugins.workspaces.activities.forums.ThreadCommentActivityType.setAdditionalActivityData(ThreadCommentActivityType.java:50)
	at org.ametys.plugins.repository.activities.DefaultActivityHolder.addActivity(DefaultActivityHolder.java:95)
	at org.ametys.plugins.repository.activities.DefaultActivityHolder.addActivity(DefaultActivityHolder.java:63)
	at org.ametys.plugins.repository.activities.ActivityHolderAmetysObject.addActivity(ActivityHolderAmetysObject.java:46)
	at org.ametys.plugins.repository.activities.AbstractActivityType.handleEvent(AbstractActivityType.java:187)
	at org.ametys.plugins.repository.activities.StoreActivityObserver.observe(StoreActivityObserver.java:62)
	at org.ametys.core.observation.ObservationManager._observesEvent(ObservationManager.java:363)