Hello,
I exported boned model of dragon from blender via io_three. I got json with animations and model.
Here:
http://leteckaposta.cz/730472209
Index source is here:
https://pastebin.com/RY81HEXh
I try to play animation “Flying”
mixer = new THREE.AnimationMixer( dragon );
var action = mixer.clipAction( 'Flying' );
console.log(action);
action.play();
but I got this error:

Can someone help me where start to solve these errors?
Thanks
Try to create your mesh like this:
dragon = new THREE.SkinnedMesh( geometry, materials );
One more small question.
Skeleton is being animated but model isnt.
Why?

I just changed
dragon = new THREE.SkinnedMesh( geometry, materials );
You have to set the skinning property of your materials to true. So iterate over the materials array and set the value for each instance.
Thank you again, you are PRO 
Now everything works.
What did you do with the animation? Can you show? )
My robot: http://js.otrisovano.ru/tests/09-2botwar/gluk/ ) And I cant understand what’s happening…
Why are you doing this in your draw() function?
mesh.morphTargetInfluences[ 0 ] = Math.sin(delta) * 20.0;
If you playback the morph target animation with THREE.AnimationMixer, there is no need to manually adjust morphTargetInfluences.
vasilii
11
http://js.otrisovano.ru/tests/09-2botwar/gluk/index1.html
!!!
ITS FANTASTIC ! THANKS ! I do not understand how to do it one week… )
!!!