[Vuejs]-Chrome extension – Refused to load the script '<URL>' because it violates the Content Security Policy

Add this line in manifest.json

{
"content_security_policy": {
"extension_pages": "script-src 'self' https://cdn.firebase.com https://*.firebaseio.com; object-src 'self'",
"sandbox": "self"
  }
}

Read more at content-security-policy