---
title: "Discussion on \"How Flutter Renders Under the Hood: BuildContext and Element Tree Explained\" | Hashnode"
description: "Discussion on \"How Flutter Renders Under the Hood: BuildContext and Element Tree Explained\". The first time I saw \"Looking up a deactivated widget's ancestor is unsafe\" in a stack trace, I genuinely didn't know what it meant. I copied the error into Google, found three different Stack Overflo"
url: "https://hashnode.com/posts/how-flutter-renders-under-the-hood-buildcontext-and-element-tree-explained/6a3aaaa1e2b119a77f6a3a71"
---

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# [How Flutter Renders Under the Hood: BuildContext and Element Tree Explained](https://freecodecamp.org/news/how-flutter-renders-under-the-hood-buildcontext-and-element-tree-explained?utm_source=hashnode&utm_medium=feed)

The first time I saw "Looking up a deactivated widget's ancestor is unsafe" in a stack trace, I genuinely didn't know what it meant. I copied the error into Google, found three different Stack Overflo

Jun 23 · 30 min read · freecodecamp.org  
Updated Oct 26  
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-   [#flutter](https://hashnode.com/tag/flutter)
-   [#element-tree](https://hashnode.com/tag/element-tree)
-   [#render-objects](https://hashnode.com/tag/render-objects)
-   [#flutter-tree](https://hashnode.com/tag/flutter-tree)
-   [#build-context](https://hashnode.com/tag/build-context)

## Written by

[Gidudu Nicholas](https://hashnode.com/@nicowalter)

@nicowalter · Kampala, UG

  
[View profile](https://hashnode.com/@nicowalter)

Software Engineer

Hello, I am a senior Flutter developer with vast experience in crafting mobile applications. I am a seasoned community organizer with vast experience in launching and building Google Developer communities under GDG Bugiri Uganda and Flutter Kampala.

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