LUIS build fails with reason "undefined" after adding the 11th phrase list

[mbinic]

Describe the bug

LUIS build fails with reason "undefined" after adding the 11th phrase list.

Version

Version: 1.4.0
Electron: 8.2.4
Chrome: 80.0.3987.165
NodeJS: 12.13.0
V8: 8.0.426.27-electron.0

Browser

• Electron distribution
• Chrome
• Safari
• Firefox
• Edge

OS

• macOS
• Windows
• Ubuntu

To Reproduce

Steps to reproduce the behavior:

1. Go to any intent trigger(s) and add 11 simple phrase lists
2. Click on 'Start Bot'
3. Once it fails to start, click on 'See Details'
4. See error "Luis build failed: undefined"

Expected behavior

I expect to see an informative error message with a reason as to why it failed.
In this case, the luis.ai portal shows "BadArgument: The phraselist features allowed per model cannot exceed the limit 10.".

Screenshots

[chrimc62]

This looks to be a bug in luis:build where the error is not being picked up properly. @cosmicshuai or @boydc2014 can you take a look?

[cosmicshuai]

Trying to reproduce this in bf-cli. The luis:build command has returned the same error info as the Luis portal. Will look into the Composer code to see where neglect the error message.