speech-to-text (IAM) does not work in US East.

[takahashi-jiec]

Describe the bug
Speech recognition does not work

To Reproduce
Steps to reproduce the behavior:

1. Change .env
2. Start node.js
3. Access URL

The procedure is as follows
https://github.com/watson-developer-cloud/speech-to-text-nodejs

[root@localhost speech-to-text-nodejs]# npm start

> @ibm-watson/speech-to-text-nodejs@2.2.0 start /root/STT/speech-to-text-nodejs
> node server.js

listening at: 3000
Error: Unauthorized: Access is denied due to invalid credentials.
    at Request._callback (/root/STT/speech-to-text-nodejs/node_modules/watson-developer-cloud/lib/requestwrapper.ts:106:15)
    at Request.self.callback (/root/STT/speech-to-text-nodejs/node_modules/request/request.js:185:22)
    at emitTwo (events.js:126:13)
    at Request.emit (events.js:214:7)
    at Request.<anonymous> (/root/STT/speech-to-text-nodejs/node_modules/request/request.js:1157:10)
    at emitOne (events.js:116:13)
    at Request.emit (events.js:211:7)
    at IncomingMessage.<anonymous> (/root/STT/speech-to-text-nodejs/node_modules/request/request.js:1079:12)
    at Object.onceWrapper (events.js:313:30)
    at emitNone (events.js:111:20)

Expected behavior
Authentication does not pass

Screenshots

Desktop (please complete the following information):

• OS: macOS 10.14
• Browser FireFox
• Version 63.0

[takahashi-jiec]

I'm sorry I moved.