Should Creditsafe Connect ever return the following "error" then it's indicating that the Authorization key is missing from the HTTP Header of the request which is being sent: 

{  "error": "JWT Token is required."

In order to resolve this situation please review the HTTP Header of the original request and ensure that it contains the following:

Authorization: {token}
Content-Type: application/json

Should further detail be required with regards to the retrieval of a valid Creditsafe Connect {token} then please refer to the following web link:

Getting Authenticated

Should you continue to experience issues then please submit a ticket.