Hi, I had the same problem in the Firefox browser.
Actually, there are 2 errors in the browser console:
Content Security Policy: The page’s settings blocked the loading of a resource at inline (“script-src”). 3 script.js:587:30117
Content Security Policy: The page’s settings blocked the loading of a resource at inline (“script-src”). 3 script.js:587:30235
But I have fixed
Error communicating with remote server error entirely reloading
go.dev/tour with disabled cache,
after that I still have a CSP error but when I press Run it works now.