Getting 403 from https://directline.botframework.com/v3/directline/tokens/generate

I have a question

Issue Description

Hello,

I've encountered an issue where https://directline.botframework.com/v3/directline/tokens/generate is not accessible through my web server, while it works as expected when accessed via localhost. I am wondering if there's a need to configure domain settings on Azure, or if there might be another underlying issue causing this behavior.

Steps to Reproduce

Deploy the web server on Vercel.
Attempt to access the given URL.
Observe that the URL is not accessible, resulting in a 403.

However, when I run the web server locally using localhost, the URL is accessible and the page/content loads without any issues.

Expected Behavior

The URL should be accessible through the Webserver just as it is when accessed via localhost.

Actual Behavior

The URL is not accessible through the Vercel deployment; however, it works on localhost.

Error:

"error": {
    "message": "Request failed with status code 403",
    "name": "AxiosError",
    "stack": "AxiosError: Request failed with status code 403\n    at settle (/var/task/.next/server/chunks/787.js:1:42835)\n    at IncomingMessage.<anonymous> (/var/task/.next/server/chunks/787.js:3:8535)\n    at IncomingMessage.emit (node:events:529:35)\n    at endReadableNT (node:internal/streams/readable:1368:12)\n    at process.processTicksAndRejections (node:internal/process/task_queues:82:21)",
    "config": {
      "transitional": {
        "silentJSONParsing": true,
        "forcedJSONParsing": true,
        "clarifyTimeoutError": false
      },
      "adapter": [
        "xhr",
        "http"
      ],
      "transformRequest": [
        null
      ],
      "transformResponse": [
        null
      ],
      "timeout": 0,
      "xsrfCookieName": "XSRF-TOKEN",
      "xsrfHeaderName": "X-XSRF-TOKEN",
      "maxContentLength": -1,
      "maxBodyLength": -1,
      "env": {

      },
      "headers": {
        "Accept": "application/json, text/plain, */*",
        "Content-Type": "application/json",
        "Authorization": "Bearer <WEBCHAT_SECRET>",
        "User-Agent": "axios/1.6.0",
        "Content-Length": "2",
        "Accept-Encoding": "gzip, compress, deflate, br"
      },
      "method": "post",
      "url": "https://directline.botframework.com/v3/directline/tokens/generate",
      "data": "{}"
    },
    "code": "ERR_BAD_REQUEST",
    "status": 403
  },

Possible Solutions/Questions

Could this be an issue related to domain configuration on Azure?
Do I need to whitelist or register my domain on Azure
Are there any settings or configurations on Vercel or Azure that I need to adjust?

Any insights or guidance on resolving this issue would be greatly appreciated!

Thank you!

microsoft / BotFramework-WebChat