Add page comment fails after upgrade

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.2.X, 7.3.X, Master
• Fix Version/s: Master
• Component/s: Asset Framework, Page Comments widget
• Labels:
  • backend_test
  • ee-ts
  • pt-upgrade-review
• Story Points: 2
• Fix Priority: 3
• Sprint: LIMA | QA Sprint 2
• Git Pull Request: https://github.com/liferay-echo/liferay-portal/pull/2850

Steps to reproduce:

1. Start a fresh vanilla bundle Liferay 6.2 EE
2. Log in as Admin
3. Add a new portal page
4. Apply upgrade path 6.2 EE => DXP 7.2 / 7.3 / master using DB Upgrade tool
5. Start up DXP
6. Log in as Admin
7. Add "Page Comments" portlet on the page created in 6.2 version
8. Try to add a comment on the page

Actual behavior: The comment does not appear, no error message on the UI. Error in the logs:
2020-10-30 15:01:08.463 WARN [http-nio-8080-exec-4][code_jsp:160]

{code="500", msg="", uri=/c/portal/comment/discussion/edit}

javax.servlet.ServletException: com.liferay.asset.kernel.exception.NoSuchEntryException: No AssetEntry exists with the key

{classNameId=10002, classPK=10484}

Expected behavior: The comment can be added