# Zoomus-jssdk for React 16

**URL:** <https://devforum.zoom.us/t/zoomus-jssdk-for-react-16/3832>\
**Category:** Web\
**Created:** [April 2, 2019, 7:33pm UTC](https://devforum.zoom.us/t/zoomus-jssdk-for-react-16/3832 "2019-04-02T19:33:12Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![tommy](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/tommy/32/72769_2.png) [@tommy](https://devforum.zoom.us/u/tommy)\
**Post date:** [August 27, 2019, 3:48pm UTC](https://devforum.zoom.us/t/zoomus-jssdk-for-react-16/3832/8 "2019-08-27T15:48:50Z")

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Duplicate post:

> [@React 16 error on after build](https://devforum.zoom.us/t/react-16-error-on-after-build/5693):
>
> I have a create-react-app, in development it’s working fine, but on production trigger this error backend.js:1 TypeError: Super expression must either be null or a function, not undefined at zoomus-jssdk.umd.min.js:38208 at zoomus-jssdk.umd.min.js:38207 at Object.e.exports (zoomus-jssdk.umd.min.js:38193) at t (zoomus-jssdk.umd.min.js:38146) at e.exports (zoomus-jssdk.umd.min.js:38150) at Object.e.exports (zoomus-jssdk.umd.min.js:38138) at n (zoomus-jssdk.umd.min.js:15) at Object.e.expor…

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