JSP compile error when accessing KB Display portlet configuration screen

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.0 M3
• Fix Version/s: 7.0.0 M2
• Component/s: Knowledge Base widget
• Labels: None
• Story Points: 6
• Fix Priority: 5
• Git Pull Request: https://github.com/brianchandotcom/liferay-plugins/pull/3839

Steps to reproduce:

• Go to a public page
• Put the Knowledge Base Display portlet in that page
• Go to the portlet's configuration screen

Expected result:
The configuration screen of the portlet is shown
Actual result:
A blanck screen is shown and an error appears in the logs