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What is this error on the testing tab of the mgmt dash




I created a new API for testing via the management dashboard. This created a test client for me automatically. This test client was automatically authorized to access this new API.

When I click on the “Test” tab (, there is a delay, then the dashboard redirects to the API list (

Viewing the logs, I observe:

    "date": "2018-03-14T14:30:04.365Z",
    "type": "feccft",
    "description": "ExtensibilityImplementationError on credentials-exchange: Script generated an unhandled asynchronous exception.",
    "connection_id": "",
    "client_id": "<client id>",
    "client_name": "Defect API (Test Client)",
    "ip": "<my ip>",
    "hostname": "<tenant>",
    "user_id": "",
    "user_name": "",
    "audience": "<api audience setting>",
    "scope": null,
    "log_id": "90020180314143004366167735570828953157178363698367954994"

This does not happen for an API that was created a month ago, and only on newer APIs that I am creating. What is the unhandled exception? Is the API misconfigured? How do you debug this kind of problem?

Please advise.