Embed Discourse, Source map error: request failed with status 404

[probonopd]

Discourse have been very kind to sponsor https://discourse.appimage.org/, and it has been running very well. So let's use it for the comments on the individual apps as well.

https://meta.discourse.org/t/embedding-discourse-comments-via-javascript/31963

[probonopd]

Getting

Error Embedding

The JavaScript console shows:

SyntaxError: An invalid or illegal string was specified embed-application-3723be59920e64ecda9d66b1e7c4c55378fb9dadfa7f422febd4f1b346c1aa05.js:1
e
_embed-application-3723be59920e64ecda9d66b1e7c4c55378fb9dadfa7f422febd4f1b346c1aa05.js:6:6
window.onload
_embed-application-3723be59920e64ecda9d66b1e7c4c55378fb9dadfa7f422febd4f1b346c1aa05.js:34:4

Why?

https://appimage.github.io is enabled for CORS in Discourse.

[probonopd]

Source map error: request failed with status 404
Resource URL: https://discourse-cdn-sjc2.com/standard10/stylesheets/embedded_theme_2_f81d35a7e4130c7e1357e7a572d542ec407a887b.css?__ws=discourse.appimage.org
Source Map URL: embedded_theme_2_f81d35a7e4130c7e1357e7a572d542ec407a887b.css.map

[probonopd]

Now getting on Safari 11.1.2 with adblocker:

Referer:

The referer was either not sent, or did not match any of the following hosts:

appimage.github.io

Disabling the adblocker makes no difference.