Coursera -- Test your proxy Lab (Postman) throws errors

[#1]

While testing my proxy with Postman, I get the following error:

Here are the request and error

https://{{org}}-{{env}}.apigee.net/v1/products/{{product_id}}

{
    "fault": {
        "faultstring": "Unable to identify proxy for host: secure and url: /v1/products/%7B%7Bproduct_id%7D%7D",
        "detail": {
            "errorcode": "messaging.adaptors.http.flow.ApplicationNotFound"
        }
    }
}