Error: connect ECONNREFUSED
Any tips on getting past this error?

config:
```json
...,
{
    "platform": "TuyaPlatform",
    "name": "TuyaPlatform",
    "options": {
        "username": "myemailaddress",
        "password": "mypassword",
        "accessId": "myaccessid",
        "accessKey": "myaccesskey",
        "lang": "en",
        "endpoint": "https://openapi.tuyaus.com"
    }
},
...
```

These credentials (username, password, accessId, and accessKey) were created for the [Tuya IoT Platform](https://iot.tuya.com/stat/app/devices) and all work with `tuya-cli` provided by [@tuyapi/cli](https://github.com/codetheweb/tuyapi).  Password has special characters, but is wrapped with quotes.

error message:
```
...
(node:1055) UnhandledPromiseRejectionWarning: Error: connect ECONNREFUSED 127.0.0.1:80
    at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1146:16)
(Use `node --trace-warnings ...` to show where the warning was created)
(node:1055) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 2)
(node:1055) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
```