Importing Test results returns an error if the Assignee field is set on the Test Execution Create Issue Screen and not present in the Test Create Issue Screen

Description

Importing Test results returns an error if the Assignee Field is set on the Test Execution Create Issue Screen and not present in the Test Create Issue Screen
How to reproduce

1. Go to Test Create Screen and remove the field assignee; on the other hand, please be sure this field is present in the Test Execution Create Screen.
2. Import, for example, a JUnit report using the following endpoint: http://localhost:8080/rest/raven/1.0/import/execution/junit?projectKey=GREYS

Actual result/Attachments

The import will fail, and the following message will appear:

Expected result
The imports should be ok.

Workaround: be sure that you have/do not have the Assignee field on both screens.

Version

• 6.1.4