Workflow App page throws an error and stops to work when an object with Workflow Apps is deleted

• Type: Regression Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: 7.3.4 CE GA5, 7.3.10 DXP GA1, Master
• Component/s: App Builder, Workflow
• Labels:
  • 7.3-known-issues
  • backend
  • backend_test
• Fix Priority: 4
• Git Pull Request: https://github.com/inacionery/liferay-portal/pull/959

Steps to Reproduce

1. Go to Applications > App Builder > Objects
2. Create an Object with Form and Table View
3. Go to Applications > App Builder > Apps > Workflow Powered
4. Create a Workflow App
5. Go to Applications > App Builder > Objects
6. Delete the Object
7. Go to Applications > App Builder > Apps > Workflow Powered

Actual Result

• Error message and exception in logs happens

2020-08-06 00:01:13.133 ERROR [http-nio-8080-exec-8][ExceptionMapper:31] java.lang.RuntimeException: com.liferay.dynamic.data.mapping.exception.NoSuchStructureException: No DDMStructure exists with the primary key 37881
java.lang.RuntimeException: com.liferay.dynamic.data.mapping.exception.NoSuchStructureException: No DDMStructure exists with the primary key 37881

Expected Result

• Workflow Powered tab should be opened without any issue

Reproduced In

• master: b2d7d9f107f402a491d2092cfaad64841044956c