Social Office Announcement throws exceptions when the announcement creator doesn't exist

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 3.X EE, 3.X CE
• Fix Version/s: 3.X EE, 3.X CE, 3.1.1 EE
• Component/s: Social Office Site, Social Office Site > Announcements
• Labels: None
• Branch Version/s:
  6.2.x
• Backported to Branch:
  Committed
• Fix Priority: 3

1. Deploy Social Office EE 3.0.2
2. Start Liferay and log in with admin
3. Create a new user "testuser" and assign the Social Office User role
5. Assign "testuser" to the "Liferay" site and assign the Site Owner role to it
6. Login with testuser
7. Open your dashboard and add a Social Office Announcement (OR Announcement) portlet to it
8. Create a new announcement for the scope "Liferay"
9. Login with admin and delete testuser
10. Open your dashboard
REPRODUCED: "Social Office Announcements is temporarily unavailable." message is displayed on the UI and a NullPointerException is being thrown