Steps to reproduce:
- Create a blog with moderation set to "beforehand".
- Add a blog post.
- Give a user the right to comment.
- With this user, add a comment on the blog post (from the WebEngine UI).
- With Administrator, go on your dashboard and click on the blog post from the My tasks gadget.
=> You get an error.
- Try to go on the blog post using regular browsing.
=> You get an error when you click on the post from the blog DM UI.
This bug is also happening when displaying tasks created with CreateTask operation.