Cannot add content security policy script src

[Yt.w]

Hello, any one can tell me how can I solve it?
I able to add it in 3.2.0 but not 3.3.0

[kOS (KilianS)]

Struggling with this, too. Please help, anyone

[merefield (Robert)]

Content-Security-Policy now uses 'strict-dynamic'

From v3.3.0.beta1, Discourse implements a ‘strict-dynamic’ Content Security Policy (CSP). This will eliminate the need for manual CSP config, and will greatly improve compatibility with external tooling like tag-managers and advertising. As a site administrator, you don’t need to do anything. The change will take effect automatically, and any external scripts you’re using will keep working. No changes are required for themes. A small number of plugins [1] may need a small tweak for compatibili…