Simple case: 
1. Load GLTF File with Specular-Glosiness-Material so the ```refreshUnfiorms``` function is being set ```mesh.onBeforeRender = extensions[ EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS ].refreshUniforms;``` 
2. Use an override material for the scene to render, for example use the SAOPass.
3. Get error because u try to work with uniforms of a material which doesn't have any

Suggestion:
Simple check if the material has the property ```isGLTFSpecularGlossinessMaterial``` and it is true. Because the ```refreshUniforms``` function is only set if it is true.

Change incorrect references in Torus docs

WebGLRenderer: Fix first time skin render

Fixed vulnerable dev-dependency (serve)

  The tube parameter is actually a radius, not a diameter

Editor: Moved grid to settings.

WebGLRenderer: Removed .setFaceCulling()

GLTFExporter: Morph Target weights support

Format according to official code style

https://github.com/mrdoob/three.js/wiki/Mr.doob%27s-Code-Style%E2%84%A2

Utils: Remove Maya exporter

Editor: Fix triangle counting for indexed buffer geometry.

Fixed some lgtm errors.

Added Sprite.copy() method

Add Sprite pivot property

Editor: Improved startup camera/grid.

WebGLRenderer: Removed renderTarget from scene.onAfterRender()

Updated the render target link