Content Security Policy is a really powerful way to help keep your users safe. It is also has a tiny bit of a learning curve, and is totally unnecessary for early-stage applications that are just being shown to friends and family.
Unfortunately, I know of no way to ‘whitelist all’ when working wiht content-security-policy. The only way to get the approximate effect of a ‘whitelist all’ command is to remove the ember-cli-content-security-policy package from your application’s package.json, and re-run
npm install. This will remove the content-security-policy checking from your application - don’t forget to re-start