myob account right plus 2020 apis are not working

As i am using myob account right plus 30 days trial on local machine and i am making api calls to get or set the data to myob account right desktop software. With the old version i.e. 2019 everything is working fine but with 2020 version api calls are not working i.e. to get the account list from myob account right desktop software and other api calls are giving same error i.e. 

endpoint :  http://localhost:8080/AccountRight/{companyFileId}/GeneralLedger/Account

{
  "Errors": [
    {
      "Name": "InternalError",
      "Message": "An exception was thrown that was not handled correctly. If this situation persists please contact developers@myob.com for further assistance.",
      "AdditionalDetails": null,
      "ErrorCode": 20,
      "Severity": "Error",
      "LearnMore": null
    }
  ],
  "Information": "Warning, error messages have not been finalised in this release and may change"
}

So we are struct on this issue; please provide resolution for the same.