---
title: "Discussion on \"Gitpod+Flask: Port Not Found Error in Preview Browser\" | Hashnode"
description: "Discussion on \"Gitpod+Flask: Port Not Found Error in Preview Browser\". After spending hours trying to figure out why gitpod shows the \"Port not found\" error page instead of our flask-based application's index page, the diagnosis is:\n\nThe root cause of the problem is still unknown.\nMost likely this is caused by unexpecte..."
url: "https://hashnode.com/posts/gitpodflask-port-not-found-error-in-preview-browser/60ee3060fc37a15ec15692e7"
---

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# [Gitpod+Flask: Port Not Found Error in Preview Browser](https://chedim.com/gitpodflask-port-not-found-error-in-preview-browser?utm_source=hashnode&utm_medium=feed)

After spending hours trying to figure out why gitpod shows the "Port not found" error page instead of our flask-based application's index page, the diagnosis is: The root cause of the problem is still unknown. Most likely this is caused by unexpecte...

Jul 14, 2021 · 1 min read · chedim.com  
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-   [#flask](https://hashnode.com/tag/flask)
-   [#python](https://hashnode.com/tag/python)

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@chedim · Virginia, US

  
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