Unable to retrieve evidence summary

Hi, I am trying to get evidence summary for a package . But it is returning a response with "Not Acceptable" and code 406. Below is the api url and response. Please help. https://sandbox.esignlive.com/packages/ZtUzoEKETaktXoVREFuRmuw_r0o=/evidence/summary { "packageId": null, "technical": "", "entity": null, "messageKey": "http.status.406", "messageLanguage": null, "message": "Not Acceptable", "code": 406, "parameters": {}, "name": "Not Acceptable" }