Error when transcode webm to mp4 using ffmpeg.wasm

I have this webm file recorded using MediaRecorder in Chrome.
https://cdn.hibervr.com/video/loop3.webm

When I try to transcode it using ffmpeg.wasm, https://github.com/ffmpegwasm/ffmpeg.wasm

Using this codepen, taken from the official site:
https://codepen.io/jeromewu/pen/NWWaMeY

I get this error in the console and the file isn't playable.

net::ERR_REQUEST_RANGE_NOT_SATISFIABLE

Any clues about how to fix it?

It works using other webm files like this.
https://phoboslab.org/files/ffmpeg-mt-fixed/jumparound.webm

**Desktop (please complete the following information):**
- OS: Mac OSX
- Browser Chrome and Firefox
- Chrome Version 88.0.4324.182

I also have posted this here
https://stackoverflow.com/questions/66246072/error-when-transcode-webm-to-mp4-using-ffmpeg-wasm