Your command seems to be un-conventional, with a body as part of the GET.
Please try with the Karate 1.0 series: https://github.com/intuit/karate/wiki/1.0-upgrade-guide
and add this line before the method
step:
And request ''
If that doesn't work, it can be a bug, but unless you provide a way to replicate, there isn't much I can do: https://github.com/intuit/karate/wiki/How-to-Submit-an-Issue
EDIT: Postman unfortunately auto-adds an Accept
header so try this also:
And header Accept = 'application/json'