When importing a JUnit XML file that only has TestSuites cycle and any TestSuite and Test, the import falls with error 500, Internal Application Error!

Description

When importing a JUnit XML file that only has TestSuites cycle and any TestSuite and Test, the import falls with error 500, Internal Application Error!

How to reproduce

1. Import via REST API the following XML file: error-1.xml

Actual result/Attachments

The import throws an error: Internal Application Error!

Please note that we ignore the import when we also have a JUnit XML file without any Test but with the structure TestSuites >> TestStuite.

Test with this file: noerror.xml

Expected result

Xray should have the same behavior for both JUnit XML without any Test. It just simply must ignore them and not interrupt the import with an Internal Application error.