# Heroku Application Error when deploying Dash app

**URL:** <https://community.plotly.com/t/heroku-application-error-when-deploying-dash-app/10936>\
**Category:** Dash Python\
**Created:** [June 15, 2018, 12:22am UTC](https://community.plotly.com/t/heroku-application-error-when-deploying-dash-app/10936 "2018-06-15T00:22:23Z")\
**Posts on this page:** 1\
**Showing post:** 2

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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:** [June 15, 2018, 12:23am UTC](https://community.plotly.com/t/heroku-application-error-when-deploying-dash-app/10936/2 "2018-06-15T00:23:07Z")

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> [@loganbrand](#):
>
> 2018-06-14T06:34:57.353590+00:00 app[web.1]: ModuleNotFoundError: No module named ‘dash\_table\_experiments’

Looks like you probably forgot to put `dash-table-experiments` in the `requirements.txt` file

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