Existia un problema de seguridad con los videos de YouTube.
thank you @Webmaster
Michael replied to your support request, #990104 with the following response:
The problem has been addressed and Youtube oneboxing is now working again.
Sorry for the inconvenience, this was an urgent and critical security update.
Discourse strongly recommends that all sites follow the default tests-passed branch of Discourse. The “stable” branch is more focused on *lack of change* than *lack of bugs* - all releases, including those on tests-passed and beta are production ready.
- Sanitize YouTube Onebox data (CVE-2021-32764)
- This vulnerability only affects sites which have disabled/modified the default content-security-policy