**Describe the bug** After creating a new APIM instance and testing the Echo API, subscription keys cannot be fetched automatically now. **To Reproduce** Steps to reproduce the behavior: 1. Deploy new API Management instance 2. Go to 'APIs' 3. Click on 'Echo API' 4. Click on 'Test' tab 5. See error **Expected behavior** We should be able to document how to easily test the Echo API. **Screenshots** 