Unable to identify proxy issue

I've just implemented a coursera topic and having issue "Unable to identify proxy for host". Looked at documentation, but am not able to find the issue.

Org: mgkrishna-eval

env: test

API: http://mgkrishna-eval-test.apigee.net/v1

I get the following error, while using GET for /products

{ "fault": { "faultstring": "Unable to identify proxy for host: secure and url: /db/products", "detail": { "errorcode": "messaging.adaptors.http.flow.ApplicationNotFound" } } }

Can someone please help?