docusign-esign-node-client: Error trying to read form-data of signed document: 444 "The custom error module does not recognize this error"

For the first time, starting about 8:30 am MDT today (Jun 16), using NodeJS package, trying to retrieve form-data from a signed document, I get error: ‘The custom error module does not recognize this error.’ and status: 444, and message: ‘Unsuccessful HTTP response’. See detail below. I opened a ticket with DocuSign support, but I’m not getting any responses.

This is the basically the code I am using. Seems the error is thrown on that last line

const accessToken = await this._getAccessToken(ctx) // Refreshes each hour
let dsApiClient = new docusignESign.ApiClient()
dsApiClient.setBasePath(this.config.baseAccountUri)
dsApiClient.addDefaultHeader('Authorization', 'Bearer ' + accessToken)
let envelopesApi = new docusignESign.EnvelopesApi(dsApiClient)
let results = await envelopesApi.getFormData(this.config.baseAccountId, envelopeId)

The following is the error that comes back

{
"name": "Error",
"stack": "Error: Unsuccessful HTTP response\n    at Request.callback (/app/node_modules/superagent/lib/node/index.js:696:15)\n    at IncomingMessage.<anonymous> (/app/node_modules/superagent/lib/node/index.js:906:18)\n    at IncomingMessage.emit (node:events:539:35)\n    at IncomingMessage.emit (node:domain:475:12)\n    at endReadableNT (node:internal/streams/readable:1345:12)\n    at processTicksAndRejections (node:internal/process/task_queues:83:21)",
"status": 444,
"message": "Unsuccessful HTTP response",
"response": {
"req": {
"url": "https://demo.docusign.net/restapi/v2.1/accounts/723b4584-e964-4391-bb2d-42e6050e477e/envelopes/582420aa-6808-46e0-806c-0fd9aec4f786/form_data",
"data": { },
"method": "GET",
"headers": {
"accept": "application/json",
"node-ver": "v16.15.1",
"user-agent": "node-superagent/3.8.2",
"content-type": "application/json",
"authorization": "Bearer eyJ0eXAiOiJNVCIs...OAgg",
"x-docusign-sdk": "Node"
}
},
"text": "The custom error module does not recognize this error.",
"header": {
"date": "Thu, 16 Jun 2022 16:57:22 GMT",
"connection": "close",
"content-type": "text/html",
"content-length": "54",
"x-docusign-node": "DA1DFE4",
"x-docusign-tracetoken": "c5aab93d-1644-4f84-b745-e5344b11c767",
"strict-transport-security": "max-age=31536000; includeSubDomains"
},
"status": 444
}

Case info…

Case #: 09640094 
Account #: 13339722-na4 
Subject: Unexpected errors occuring when retrieving form-data from a signed envelope