Issue with FBXLoader.js

Hi, I am new in three.js. I am loading .fbx models by downloading from threejs download section but facing below error:

(intermediate value).copy(...).invert is not a function
    at generateTransform (FBXLoader.js:4094)
    at GeometryParser.parseMeshGeometry (FBXLoader.js:1633)
    at GeometryParser.parseGeometry (FBXLoader.js:1575)
    at GeometryParser.parse (FBXLoader.js:1557)
    at FBXTreeParser.parse (FBXLoader.js:175)
    at FBXLoader.parse (FBXLoader.js:149)
    at Object.onLoad (FBXLoader.js:97)
    at XMLHttpRequest.<anonymous> (three.module.js:36513)

Any suggestions will help me.

This runtime error highly indicates that your version of FBXLoader is out-of-sync with the core library. You should always use all library files from the same release.

1 Like


I think I have the same problem, but can’t seem to fix it.

Here’s my prtsc:

Please help me.


Like I said above it’s important to use all library files from the same release. The OP did not do that.