# Dcc Dropdown in 1.0.0rc1 throws error in IE11

**URL:** <https://community.plotly.com/t/dcc-dropdown-in-1-0-0rc1-throws-error-in-ie11/11917>\
**Category:** Dash Python\
**Created:** [July 19, 2018, 1:22pm UTC](https://community.plotly.com/t/dcc-dropdown-in-1-0-0rc1-throws-error-in-ie11/11917 "2018-07-19T13:22:37Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![simon](https://avatars.discourse-cdn.com/v4/letter/s/f07891/32.png) [@simon](https://community.plotly.com/u/simon)\
**Post date:** [July 19, 2018, 1:22pm UTC](https://community.plotly.com/t/dcc-dropdown-in-1-0-0rc1-throws-error-in-ie11/11917/1 "2018-07-19T13:22:37Z")

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In IE11, with dash-core-components 1.0.0rc1 the dcc Dropdown throws JS error

Objects are not valid as a React child (found: object with keys {$$typeof, type, key, ref, props, \_owner}).

When clicked in the browser.

No error in Chrome or Edge

With dash-core-components 0.25.0 it works OK in IE11

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**Author:** ![chriddyp](https://sea2.discourse-cdn.com/flex024/user_avatar/community.plotly.com/chriddyp/32/16855_2.png) [@chriddyp](https://community.plotly.com/u/chriddyp)\
**Post date:** [July 19, 2018, 2:18pm UTC](https://community.plotly.com/t/dcc-dropdown-in-1-0-0rc1-throws-error-in-ie11/11917/2 "2018-07-19T14:18:47Z")

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I wouldn’t recommend using the `1.0.0rc1` versions in production, they are really just proof-of-concepts.

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**Author:** ![simon](https://avatars.discourse-cdn.com/v4/letter/s/f07891/32.png) [@simon](https://community.plotly.com/u/simon)\
**Post date:** [July 19, 2018, 5:26pm UTC](https://community.plotly.com/t/dcc-dropdown-in-1-0-0rc1-throws-error-in-ie11/11917/3 "2018-07-19T17:26:02Z")

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OK, thanks. I’ll stick with 0.25.0