Unable to delete site after deleting user with knowledge base articles.

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.X, 7.1.X, Master
• Fix Version/s: 7.0.X, 7.1.10 DXP FP10, 7.1.10.2 SP2, 7.1.3 CE GA4, 7.1.X, Master
• Component/s: Knowledge Base widget
• Labels:
  • QA-B
  • ee-ts
  • liferay-dxp-71-sp2
  • liferay-fixpack-dxp-10-7110
• Branch Version/s:
  7.1.x, 7.0.x
• Backported to Branch:
  Committed
• Fix Priority: 3
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/67801
• QA Test Name:
  • dont-test-again

Description:
When a User that has created a Knowledge Base Article in a Site is deleted, the Site will not delete and throws the following error:

ERROR [http-nio-8080-exec-5][GroupLocalServiceImpl:4206] Unable to delete data for portlet null in group 34422
com.liferay.exportimport.kernel.lar.PortletDataException: No User exists with the primary key 34404
...
Caused by: com.liferay.portal.kernel.exception.NoSuchUserException: No User exists with the primary key 34404

 

Environments:
Reproducible in Master, 7.1, and 7.0

Steps to Reproduce:
1. Start up a clean bundle.
2. As admin, create a user.
3. Grant the user Administrator role.
4. Still as admin, create a new site (no pages)
5. Sign in as the new user.
6. Navigate to the new site and go to Content > Knowledge Base > Add a new Base article with any title and content. Save.
7. Sign out and then sign in as the first Admin user. Go to Control Panel > Users > Users and Organizations.
8. Deactivate and then Delete the new user.
9. Go to Control Panel > Sites
10. Try to deactivate the new site and observe the following error:

Expected Result: Site deletes.
Actual Result: The following error occurs.

GroupId is:32298 , Group key: 32295
GroupId is:32270 , Group key: test1
com.liferay.portal.kernel.exception.SystemException: com.liferay.exportimport.kernel.lar.PortletDataException: com.liferay.portal.kernel.exception.NoSuchUserException: No User exists with the primary key 32245
com.liferay.portal.kernel.exception.SystemException: com.liferay.exportimport.kernel.lar.PortletDataException: com.liferay.portal.kernel.exception.NoSuchUserException: No User exists with the primary key 32245
at com.liferay.portal.service.impl.GroupLocalServiceImpl.deletePortletData(GroupLocalServiceImpl.java:4014)
at com.liferay.portal.service.impl.GroupLocalServiceImpl.deleteGroup(GroupLocalServiceImpl.java:956)
at com.liferay.portal.service.impl.GroupLocalServiceImpl.deleteGroup(GroupLocalServiceImpl.java:1104)

Master: bd1740b0b4067bbfb54764675fc8a1dfc6224e31