I was able to complete this project on Einstein bot in my trailhead playground. https://trailhead.salesforce.com/content/learn/projects/build-an-einstein-bot/prep-for-einstein-bots
In the first unit of this project, a step asks to add the Snap-In chat component in community page. It shows a button there while previewing the community but doesn't work as of CSP restriction. I tried to whitelist the blocked domain and add it as trusted from here:
But it continuously gives the error:
I tried them adding in Salesforce setup in CSP trusted site and CORS as well, but it is not working. I got this CSP error somewhere else as well, but was able to resolve this by adding the site in CSP.