# Error loading Inspector tools in the Babylon.js Playground

**URL:** https://forum.babylonjs.com/t/error-loading-inspector-tools-in-the-babylon-js-playground/63822
**Category:** Bugs
**Created:** [July 17, 2026, 11:16pm UTC](https://forum.babylonjs.com/t/error-loading-inspector-tools-in-the-babylon-js-playground/63822 "2026-07-17T23:16:24Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![cx20](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/cx20/32/46_2.png) [@cx20](https://forum.babylonjs.com/u/cx20)
#### Post date: [July 17, 2026, 11:16pm UTC](https://forum.babylonjs.com/t/error-loading-inspector-tools-in-the-babylon-js-playground/63822/1 "2026-07-17T23:16:24Z")

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An error appeared when I selected “Tools” in the Inspector on the Babylon.js Playground.

 ![image](https://us1.discourse-cdn.com/flex024/uploads/babylonjs/original/3X/9/5/95ae6f11c2890f7ee51b1a6c3c19739751df190c.png)

```auto
errorBoundary.js:75 [Tools] Error caught: LoadFileError: Error status: 400 - Unable to load https://cdn.jsdelivr.net/gh//terikon/gif.js.optimized@0.1.6/dist/gif.worker.js
    at fileTools.pure.ts:549:15
    at XMLHttpRequest.e (fileTools.pure.ts:724:21)

```

---

<div class="post-metadata">

### Author: ![Cedric](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/cedric/32/2742_2.png) [@Cedric](https://forum.babylonjs.com/u/Cedric)
#### Post date: [July 20, 2026, 7:49am UTC](https://forum.babylonjs.com/t/error-loading-inspector-tools-in-the-babylon-js-playground/63822/2 "2026-07-20T07:49:30Z")

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cc @RaananW

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<div class="post-metadata">

### Author: ![RaananW](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/raananw/32/28955_2.png) [@RaananW](https://forum.babylonjs.com/u/RaananW)
#### Post date: [July 20, 2026, 9:18am UTC](https://forum.babylonjs.com/t/error-loading-inspector-tools-in-the-babylon-js-playground/63822/3 "2026-07-20T09:18:50Z")

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checking! thanks 🙂

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<div class="post-metadata">

### Author: ![RaananW](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/raananw/32/28955_2.png) [@RaananW](https://forum.babylonjs.com/u/RaananW)
#### Post date: [July 20, 2026, 9:21am UTC](https://forum.babylonjs.com/t/error-loading-inspector-tools-in-the-babylon-js-playground/63822/4 "2026-07-20T09:21:32Z")

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If every issue would be that easy to fix…

> <https://github.com/BabylonJS/Babylon.js/pull/18712>
>
> \## Problem
> 
> Opening the \*\*Tools\*\* tab in the Inspector (e.g. in the Playground) …throws:
> 
> \`\`\`
> LoadFileError: Error status: 400 - Unable to load
> https://cdn.jsdelivr.net/gh//terikon/gif.js.optimized@0.1.6/dist/gif.worker.js
> \`\`\`
> 
> Reported on the forum: https://forum.babylonjs.com/t/error-loading-inspector-tools-in-the-babylon-js-playground/63822
> 
> \## Root cause
> 
> The GIF capture worker URL had a \*\*double slash\*\* after \`gh\` (\`gh//terikon\`). jsDelivr's GitHub endpoint rejects the empty path segment with HTTP 400, so the Tools tab throws as soon as it's opened.
> 
> Verified:
> \- \`gh//terikon/...\` → \*\*400\*\*
> \- \`gh/terikon/...\` → \*\*200\*\* ✅
> 
> \## Fix
> 
> Removed the extra slash in both the new and legacy inspectors:
> \- \`packages/dev/inspector-v2/src/components/tools/capture/gifCaptureTool.tsx\`
> \- \`packages/dev/inspector/src/components/actionTabs/tabs/toolsTabComponent.tsx\`