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:
method
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:
Accept
And header Accept = 'application/json'
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