same issue, , cans someone help, with error :

(index):1 GET http://localhost:4201/ 404 (Not Found)

Refused to connect to 'http://localhost:4201/.well-known/appspecific/com.chrome.devtools.json' because it violates the following Content Security Policy directive: "default-src 'none'". Note that 'connect-src' was not explicitly set, so 'default-src' is used as a fallback.