# Babylonjs editor stuck on loading

**URL:** <https://forum.babylonjs.com/t/babylonjs-editor-stuck-on-loading/11031>\
**Category:** Questions\
**Tags:** editor\
**Created:** [May 21, 2020, 9:33am UTC](https://forum.babylonjs.com/t/babylonjs-editor-stuck-on-loading/11031 "2020-05-21T09:33:12Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Elisa\_Ltc](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/elisa_ltc/32/8325_2.png) [@Elisa\_Ltc](https://forum.babylonjs.com/u/Elisa_Ltc)\
**Post date:** [May 21, 2020, 9:33am UTC](https://forum.babylonjs.com/t/babylonjs-editor-stuck-on-loading/11031/1 "2020-05-21T09:33:12Z")

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Hi.  
I’m newbie in Babylon. I’m tryng to load my model in BabylonJS Editor and It stucks on loading.  
I followed this steps:

1. New file Project
2. Import textures from scenes folder
3. Import “filename.babylon” model from scene folder  
4.Save project in Rainy-Day folder
4. Double-click on scene.editorproject file
5. Babylon js Editot stucks on loading

In debug I get this result:

Uncaught (in promise) TypeError: Cannot read property ‘toLowerCase’ of undefined  
at Function.Tools.GetExtensionFromMimeType (tools.ts:100)  
at Function.eval (gltf-tools.ts:32)  
at step (gltf-tools.js:33)  
at Object.eval [as next] (gltf-tools.js:14)  
at fulfilled (gltf-tools.js:5)

Why?

 ![Annotation 2020-05-21 112627](https://us1.discourse-cdn.com/flex024/uploads/babylonjs/original/2X/9/960165be317674c1b3f34ee47f3c39fdc766c0cd.jpeg)

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<div class="post-metadata">

**Author:** ![sebavan](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/sebavan/32/57_2.png) [@sebavan](https://forum.babylonjs.com/u/sebavan)\
**Post date:** [May 21, 2020, 9:58am UTC](https://forum.babylonjs.com/t/babylonjs-editor-stuck-on-loading/11031/2 "2020-05-21T09:58:19Z")

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Might be a question to the editor creator @julien-moreau

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**Author:** ![julien-moreau](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/julien-moreau/32/12070_2.png) [@julien-moreau](https://forum.babylonjs.com/u/julien-moreau)\
**Post date:** [May 21, 2020, 10:23am UTC](https://forum.babylonjs.com/t/babylonjs-editor-stuck-on-loading/11031/3 "2020-05-21T10:23:13Z")

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Ouch! Thanks for reporting @Elisa_Ltc  
Is it possible to share you scene here or by PM? Would help me a lot to fix the problem  
Thanks and sorry