Retroarch Webplayer - SyntaxError: JSON.parse

[Krakinou]

Description

When installing RetroArch web player following these instructions and accessing the webplayer URL, these error messages are displayed:

SyntaxError: JSON.parse: unexpected character at line 1 column 1 of the JSON data
onreadystatechange https://yuno.dev/retroarch/browserfs.min.js:9
    i https://yuno.dev/retroarch/browserfs.min.js:9
    _requestFileSync https://yuno.dev/retroarch/browserfs.min.js:6
    b https://yuno.dev/retroarch/browserfs.min.js:6
    setupFileSystem https://yuno.dev/retroarch/libretro.js:98
    afs https://yuno.dev/retroarch/libretro.js:44
    b https://yuno.dev/retroarch/browserfs.min.js:5
    e https://yuno.dev/retroarch/browserfs.min.js:5

Error: Unable to find listing at URL: ${listingUrlOrObj}
b https://yuno.dev/retroarch/browserfs.min.js:6
    setupFileSystem https://yuno.dev/retroarch/libretro.js:98
    afs https://yuno.dev/retroarch/libretro.js:44
    b https://yuno.dev/retroarch/browserfs.min.js:5
    e https://yuno.dev/retroarch/browserfs.min.js:5

Retroarch won't start and I cannot start a core

Version/Commit

You can find this information under Information/System Information

• RetroArch: 1.8.6 - from https://buildbot.libretro.com/stable/1.8.6/emscripten/

Environment information

• OS: debian 9 Strech
• web server : nginx
• Browser : Firefox 76 on Ubuntu 18.04

[Krakinou]

Hi, upon further check, it seems that it's due to my nginx config that do not redirect /assets/ correctly. It seems that the web player cannot be run in a context_path, meaning on https://domain.tld/retroarch for instance? Only on retroarch.domain.tld? Do you confirm?