Getting Build Error While adding Ext.chart

[extjsdev1]

Unable to Cmd build/Production build a working app including Chart on bryntum package

Ext version : 6.2
Ext cmd version : 6.2.1.29
Bryntum version : 5.1.0

Require the charts package in package.json

I was adding some charting with CartesianChart in one view under the bryntum package classic folder. then do the build and I got error after build/ build production, but it is fine when development/testing.

[Terence]

Ext.chart.CartesianChart is not our package it's Sencha's.

We can not tell what is going on, based on the information provided. Please provide a runnable testcase. In case the build works without the CartesianChart you should address this issue at the Sencha forums.