# Gtlf loader is undefined **URL:** \ **Category:** Questions\ **Tags:** loaders\ **Created:** [July 28, 2021, 5:36pm UTC](https://discourse.threejs.org/t/gtlf-loader-is-undefined/28448 "2021-07-28T17:36:23Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Reuben\_cf](https://yyz1.discourse-cdn.com/flex035/user_avatar/discourse.threejs.org/reuben_cf/32/19782_2.png) [@Reuben\_cf](https://discourse.threejs.org/u/Reuben_cf)\ **Post date:** [July 28, 2021, 5:36pm UTC](https://discourse.threejs.org/t/gtlf-loader-is-undefined/28448/1 "2021-07-28T17:36:23Z")
```javascript hello ``` the error i get is ```javascript Uncaught ReferenceError: GLTFLoader is not defined at init (index.html:46) at index.html:58 ``` why do i get GLTF is not defined ---
**Author:** ![donmccurdy](https://yyz1.discourse-cdn.com/flex035/user_avatar/discourse.threejs.org/donmccurdy/32/33209_2.png) [@donmccurdy](https://discourse.threejs.org/u/donmccurdy)\ **Post date:** [July 28, 2021, 6:40pm UTC](https://discourse.threejs.org/t/gtlf-loader-is-undefined/28448/2 "2021-07-28T18:40:21Z")
Refer to the installation docs here: [https://threejs.org/docs/#manual/en/introduction/Installation](https://threejs.org/docs/#manual/en/introduction/Installation) Notably, (1) GLTFLoader and three.js should be loaded from the same CDN, and the same version number. (2) anything in the `examples/jsm` folder is a module and not a global variable. If you’re using global variables you must use the versions in `examples/js` instead.