Import Swagger_TestCase Runner doesn't execute tests

Hi,

I still am facing problem with the execution of the tests.

When I run 'step by step', each test passes. But when I want to execute on the level 'test case' of 'test suite', the tests aren't executed.

I executed following steps 

• File > new > functional test
• Description file
• Link swagger  "xxx/v2/api-docs"
• Select one of the following  (see screenshots for result)
  
  • Single testCase + Run => Result:You don’t see the steps – status failed
  • Multiple testCases + Run => Result: You see it runs – but all  cases are on failed & steps are on ‘cancelled

Thanks in advance,

Kindest regards,
Tamira

PS. Sometimes I do receive following warning in the log - but I see in other messages that is can be ignored

WARN:Test Monitor: Trying to unregister a non-existing test model item [model item ID: db4e5929-0205-4204-8520-f88943f8a10a].