code: 'ERR_UNHANDLED_REJECTION' ReferenceError: document is not defined

[LeoneVi]

I’ve noticed that this error appears only when downloading multi-page PDFs. Single-page PDFs still seem to work.
Maybe there were recent changes to MuseScore, another MuseScore downloader I was using recently started failing after the first page only.

PDFs that failed to download:

• https://musescore.com/user/4609986/scores/1749181
• https://musescore.com/user/30487624/scores/6256488
• https://musescore.com/user/6662591/scores/4369656

PDFs that successfully downloaded:

• https://musescore.com/user/27602414/scores/5891199
• https://musescore.com/user/2466621/scores/2839501

Error:

 ~ npx dl-librescore@latest

? MuseScore URL or path to file or folder:
  (starts with https://musescore.com/ or is a path) 
  https://musescore.com/user/4609986/scores/1749181
! ID: 1749181
  Title: Waltz in A Minor(Chopin)
  Continue? Yes

? Filetype Selection pdf
? Output Directory: /Users/Tory
⠂ Processing…ReferenceError: document is not defined
    at /Users/Tory/.npm/_npx/47461c73a56e4a1f/node_modules/dl-librescore/dist/cli.js:5119:41
    at Generator.next (<anonymous>)
    at /Users/Tory/.npm/_npx/47461c73a56e4a1f/node_modules/dl-librescore/dist/cli.js:14:71
    at new Promise (<anonymous>)
    at __awaiter (/Users/Tory/.npm/_npx/47461c73a56e4a1f/node_modules/dl-librescore/dist/cli.js:10:12)
    at getApiAuthNetwork (/Users/Tory/.npm/_npx/47461c73a56e4a1f/node_modules/dl-librescore/dist/cli.js:5069:44)
    at /Users/Tory/.npm/_npx/47461c73a56e4a1f/node_modules/dl-librescore/dist/cli.js:5186:26
    at Generator.next (<anonymous>)
    at fulfilled (/Users/Tory/.npm/_npx/47461c73a56e4a1f/node_modules/dl-librescore/dist/cli.js:11:58)
    at process.processTicksAndRejections (node:internal/process/task_queues:103:5)
node:internal/process/promises:330
      new UnhandledPromiseRejection(reason);
      ^

UnhandledPromiseRejection: This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). The promise rejected with the reason "function Error() { [native code] }".
    at throwUnhandledRejectionsMode (node:internal/process/promises:330:7)
    at processPromiseRejections (node:internal/process/promises:413:17)
    at process.processTicksAndRejections (node:internal/process/task_queues:104:32) {
  code: 'ERR_UNHANDLED_REJECTION'
}

Node.js v25.2.1

[MJBCodestuff]

Getting the same error in the commandline, but the tampermonkey script seems unaffected by this, so that's at least a temporary solution.

[PeterNjeim]

This issue is caused by MuseScore using Cloudflare bot detection. Use the browser extension as a workaround. I want to keep the command-line tool headless, so most bot detection bypasses aren't available to me. I'm not sure if I'll be able to solve this issue honestly

[PeterNjeim]

PDF pages 2 and later, as well as MIDI and MP3 files, all fail due to the Cloudflare bot detection

[kayden1940]

@PeterNjeim would this helps?

https://github.com/seleniumbase/SeleniumBase

[PeterNjeim]

That's something I've looked at but requires a rewrite into Python. Someone already rewrote the extension in Python (https://github.com/kikkopy/py-librescore), so I could use that as a base, but I'm currently looking at JavaScript-based alternatives

[kayden1940]

just brainstorming but see if calling a python script from js(via python-shell etc) would do

[PeterNjeim]

Funnily I told myself I expected this exact response from you. This requires Python to be installed on the user's computer

[kayden1940]

Shared braincells. could compile the python script(via PyInstaller etc) to executable and js call executable funtions. honestly options are limited in this setting.