Errors in Portlet Embedding with Web Content

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.2.X, Master
• Fix Version/s: 7.2.10 DXP FP8, 7.2.10.3 DXP SP3, 7.2.X, 7.3.4 CE GA5, 7.3.5 CE GA6, 7.3.10 DXP GA1, Master
• Component/s: Content Display Widgets > Web Content Display widget
• Labels:
  • ee-ts
  • liferay-dxp-72-sp3
  • liferay-fixpack-dxp-8-7210
• Branch Version/s:
  7.2.x
• Backported to Branch:
  Committed
• Fix Priority: 3
• Git Pull Request: https://github.com/liferay-echo/liferay-portal/pull/1761

Description
An error occurs when editing content when embedding a portlet with web content.

Steps to reproduce

1. Navigate to Liferay > Content & Data > Web Content
2. Add a structure as followings
   Name:portletEmbedderWC
   Fields:Text Box / Field Label:portlet_id
   
3. Add a template using "portletEmbedderWC" and paste the following code

<div id="AceJournal-Menu">
<@liferay_portlet["runtime"]
    portletName="${portlet_id.getData()}"
     defaultPreferences="${freeMarkerPortletPreferences}"
    portletProviderAction=portletProviderAction.VIEW
    instanceId="uniquename1"
/>
</div>

1. Uncheck the "Cacheable" checkbox and Save
   

1. Add a Web conten using "portletEmbedderWC" template as followings
   Title:portletEmbedderWC
   Body(portlet_id):com_liferay_journal_web_portlet_JournalPortlet
2. Navigate to homepage and add a Web Content display portlet and select the web content created in step 6
3. Edit the content and make sure it is editable

Actual result
"portletEmbedderWC is temporarily unavailable." is displayed.
 
NPE is thrown in the log.

2020-07-14 08:24:46.819 ERROR [http-nio-8080-exec-7][PortletServlet:119] javax.portlet.PortletException: javax.servlet.ServletException: java.lang.NullPointerException
javax.portlet.PortletException: javax.servlet.ServletException: java.lang.NullPointerException

Expected result
Web content is editable.

 

Note
If Cacheable is checked, content is editable (layout is broken a little bit though).
No errors on browser's console.