It looks like a webgpu driver issue - can you tell me what model of graphics chip you're using?

RTX 5090 with 610.62 drivers, Windows 11 25H2, Firefox 153.0b9.

FWIW I tried the other one linked here[1] which also throws the same error and stops. Using the same engine perhaps?

[1]: https://news.ycombinator.com/item?id=48986175

Hmm, today it works all of a sudden. No changes, no reboots, no new drivers, not restarted Firefox either. Just repeated what I did yesterday: open the link in a private window.

Yesterday when it didn't work I did try multiple times, and as mentioned that other site as well.

Guess Firefox on Windows has some flaky WebGPU support?

edit: must be, worked fine a couple of times, then it stopped with same error as before even after multiple attempts.

thanks for double checking, that's very good to know!