# Help: Deploy failed

**URL:** <https://community.plotly.com/t/help-deploy-failed/79637>\
**Category:** Dash Python\
**Tags:** dash-online-course\
**Created:** [October 26, 2023, 2:27pm UTC](https://community.plotly.com/t/help-deploy-failed/79637 "2023-10-26T14:27:12Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![weiqi.zhang](https://avatars.discourse-cdn.com/v4/letter/w/97f17d/32.png) [@weiqi.zhang](https://community.plotly.com/u/weiqi.zhang)\
**Post date:** [October 26, 2023, 2:27pm UTC](https://community.plotly.com/t/help-deploy-failed/79637/1 "2023-10-26T14:27:12Z")

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I tried to deploy my app (unfinished) on Render but Render showed an error: “bash: gunicorn: command not found” . Not sure what went wrong.

Here is my GitHub repo link: [GitHub - wzhang18/dash-practice: a practice app for online course](https://github.com/wzhang18/dash-practice.git)

Here’s how I set up gunicorn:

 ![image](https://us1.discourse-cdn.com/flex024/uploads/plot/original/3X/1/5/15d7ba85a39922fc0b332823b786142a46b7dd96.png)

Thanks.

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**Author:** ![jinnyzor](https://sea2.discourse-cdn.com/flex024/user_avatar/community.plotly.com/jinnyzor/32/21194_2.png) [@jinnyzor](https://community.plotly.com/u/jinnyzor)\
**Post date:** [October 26, 2023, 3:20pm UTC](https://community.plotly.com/t/help-deploy-failed/79637/2 "2023-10-26T15:20:39Z")

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Hello @weiqi.zhang,

I think you might need to have gunicorn in your requirements.txt.

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<div class="post-metadata">

**Author:** ![weiqi.zhang](https://avatars.discourse-cdn.com/v4/letter/w/97f17d/32.png) [@weiqi.zhang](https://community.plotly.com/u/weiqi.zhang)\
**Post date:** [October 26, 2023, 5:29pm UTC](https://community.plotly.com/t/help-deploy-failed/79637/3 "2023-10-26T17:29:29Z")

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It worked! Thank you!