ionic-cli: v3beta7 - Error: encountered bad status code (400) - When generating resources

v3 beta7 testing

Please ensure that you are on the latest version of the CLI. npm view ionic@latest version

2.2.2

What version of the CLI are you using? Output of ionic --version

3.0.0-beta7

Short description of the problem:

Getting the below error when generating resources on iOS

You need to be logged into your Ionic account in order to run the cordova:resources command.

Log into your Ionic account
If you don't have one yet, create yours by running: ionic signup

? Email: **********
? Password: *****************
✔ Collecting resource configuration and source images - done!
✔ Uploading source images to prepare for transformations - done!
⠹ Generating platform resources Error: encountered bad status code (400) for http://res.ionic.io/api/v1/transform
    at Request.cli_utils_1.createRequest.timeout.type.send.on (/Users/proj/app/node_modules/@ionic/cli-plugin-cordova/dist/lib/resources.js:159:24)
    at emitOne (events.js:96:13)
    at Request.emit (events.js:191:7)
    at Request._emitResponse (/Users/proj/app/node_modules/superagent/lib/node/index.js:745:10)
    at ClientRequest.<anonymous> (/Users/proj/app/node_modules/superagent/lib/node/index.js:360:10)
    at Object.onceWrapper (events.js:293:19)
    at emitOne (events.js:101:20)
    at ClientRequest.emit (events.js:191:7)
    at HTTPParser.parserOnIncomingClient (_http_client.js:522:21)
    at HTTPParser.parserOnHeadersComplete (_http_common.js:99:23)

What behavior are you expecting?

Generation of resources without errors

Steps to reproduce:

1. run ionic cordova resources on iOS