pythreejs animation is not displaying in the HTML version anymore

[moorepants]

https://moorepants.github.io/learn-multibody-dynamics/visualization.html

Weird given that I have the software mostly, if not all, pinned.

[moorepants]

JS console shows:

Error serializing widget state attribute:  camera 2 [embed-amd.js:69:154956](https://unpkg.com/@jupyter-widgets/html-manager@%5E0.20.1/dist/embed-amd.js)
    serialize https://unpkg.com/@jupyter-widgets/html-manager@^0.20.1/dist/embed-amd.js:69
    o https://unpkg.com/jupyter-threejs@^2.1.0/dist/index.js:2
    c https://unpkg.com/jupyter-threejs@^2.1.0/dist/index.js:2
    _settlePromiseFromHandler https://unpkg.com/jupyter-threejs@^2.1.0/dist/index.js:2
    _settlePromise https://unpkg.com/jupyter-threejs@^2.1.0/dist/index.js:2
    _settlePromise0 https://unpkg.com/jupyter-threejs@^2.1.0/dist/index.js:2
    _settlePromises https://unpkg.com/jupyter-threejs@^2.1.0/dist/index.js:2
    _fulfill https://unpkg.com/jupyter-threejs@^2.1.0/dist/index.js:2
    _resolveCallback https://unpkg.com/jupyter-threejs@^2.1.0/dist/index.js:2
    _settlePromiseFromHandler https://unpkg.com/jupyter-threejs@^2.1.0/dist/index.js:2
    _settlePromise https://unpkg.com/jupyter-threejs@^2.1.0/dist/index.js:2
    _settlePromise0 https://unpkg.com/jupyter-threejs@^2.1.0/dist/index.js:2
    _settlePromises https://unpkg.com/jupyter-threejs@^2.1.0/dist/index.js:2
    _fulfill https://unpkg.com/jupyter-threejs@^2.1.0/dist/index.js:2
    _resolve https://unpkg.com/jupyter-threejs@^2.1.0/dist/index.js:2
    _promiseFulfilled https://unpkg.com/jupyter-threejs@^2.1.0/dist/index.js:2
    _settlePromise https://unpkg.com/jupyter-threejs@^2.1.0/dist/index.js:2
    _fulfillPromises https://unpkg.com/jupyter-threejs@^2.1.0/dist/index.js:2
    _settlePromises https://unpkg.com/jupyter-threejs@^2.1.0/dist/index.js:2
    l https://unpkg.com/jupyter-threejs@^2.1.0/dist/index.js:2
    s https://unpkg.com/jupyter-threejs@^2.1.0/dist/index.js:2
    _drainQueues https://unpkg.com/jupyter-threejs@^2.1.0/dist/index.js:2
    drainQueues https://unpkg.com/jupyter-threejs@^2.1.0/dist/index.js:2
Unhandled rejection e.prototype.serialize@https://unpkg.com/@jupyter-widgets/html-manager@%5E0.20.1/dist/embed-amd.js:69:154885
5938/createModel/o<@https://unpkg.com/jupyter-threejs@%5E2.1.0/dist/index.js:2:841610
c@https://unpkg.com/jupyter-threejs@%5E2.1.0/dist/index.js:2:78248
6624/n/<[22]</t.exports/O.prototype._settlePromiseFromHandler@https://unpkg.com/jupyter-threejs@%5E2.1.0/dist/index.js:2:51172
6624/n/<[22]</t.exports/O.prototype._settlePromise@https://unpkg.com/jupyter-threejs@%5E2.1.0/dist/index.js:2:51972
6624/n/<[22]</t.exports/O.prototype._settlePromise0@https://unpkg.com/jupyter-threejs@%5E2.1.0/dist/index.js:2:52671
6624/n/<[22]</t.exports/O.prototype._settlePromises@https://unpkg.com/jupyter-threejs@%5E2.1.0/dist/index.js:2:54023
6624/n/<[22]</t.exports/O.prototype._fulfill@https://unpkg.com/jupyter-threejs@%5E2.1.0/dist/index.js:2:53041
6624/n/<[22]</t.exports/O.prototype._resolveCallback@https://unpkg.com/jupyter-threejs@%5E2.1.0/dist/index.js:2:49916
6624/n/<[22]</t.exports/O.prototype._settlePromiseFromHandler@https://unpkg.com/jupyter-threejs@%5E2.1.0/dist/index.js:2:51326
6624/n/<[22]</t.exports/O.prototype._settlePromise@https://unpkg.com/jupyter-threejs@%5E2.1.0/dist/index.js:2:51972
6624/n/<[22]</t.exports/O.prototype._settlePromise0@https://unpkg.com/jupyter-threejs@%5E2.1.0/dist/index.js:2:52671
6624/n/<[22]</t.exports/O.prototype._settlePromises@https://unpkg.com/jupyter-threejs@%5E2.1.0/dist/index.js:2:54023
6624/n/<[22]</t.exports/O.prototype._fulfill@https://unpkg.com/jupyter-threejs@%5E2.1.0/dist/index.js:2:53041
6624/n/<[23]</t.exports/s.prototype._resolve@https://unpkg.com/jupyter-threejs@%5E2.1.0/dist/index.js:2:57638
6624/n/<[23]</t.exports/s.prototype._promiseFulfilled@https://unpkg.com/jupyter-threejs@%5E2.1.0/dist/index.js:2:57979
6624/n/<[22]</t.exports/O.prototype._settlePromise@https://unpkg.com/jupyter-threejs@%5E2.1.0/dist/index.js:2:52073
6624/n/<[22]</t.exports/O.prototype._fulfillPromises@https://unpkg.com/jupyter-threejs@%5E2.1.0/dist/index.js:2:53546
6624/n/<[22]</t.exports/O.prototype._settlePromises@https://unpkg.com/jupyter-threejs@%5E2.1.0/dist/index.js:2:54075
l@https://unpkg.com/jupyter-threejs@%5E2.1.0/dist/index.js:2:5296
s@https://unpkg.com/jupyter-threejs@%5E2.1.0/dist/index.js:2:5236
6624/n/<[2]</a.prototype._drainQueues@https://unpkg.com/jupyter-threejs@%5E2.1.0/dist/index.js:2:6362
6624/n/<[2]</a/this.drainQueues@https://unpkg.com/jupyter-threejs@%5E2.1.0/dist/index.js:2:5169

Maybe somehow the js libs are not pinned.

[moorepants]

I'm pretty sure I saw this working in the last couple of weeks, so it is a recent change.

[moorepants]

ipywidgets released a new release on March 21, which broke pythreejs in some ways it seems.

[moorepants]

I tried this 39c2b2e as it fixes it when just running a notebook, but it doesn't seem to fix things in the jupyter-sphinx page.

[moorepants]

Sounds like a similar issue: jupyter-widgets/ipywidgets#3754

[moorepants]

It was pointed out to me that the animations now work:

I haven't done anything on my end to fix this. Very unusual why it just started working again.

[Peter230655]

For what it's worth: pythreejs never stopped working on my iPad. Since I thought this was a quirk of my Jupyter notebook app, I did not think it was worth to report. Had not tried on my desk top PC.

[moorepants]

This starting working again with no change on our end. I can only guess it was some fix applied to the jupyter/pythreejs cdn hosted files. Closing.