Mixed Content: The page at 'https://qgnirlp.github.stackblitz.io/lions' was loaded over HTTPS, but requested an insecure XMLHttpRequest endpoint 'http://www.mocky.io/v2/5920141a25000023015998f2'. This request has been blocked; the content must be served over HTTPS.
With API urls updated to https application can be launched on environments like stackblitz or github pages: https://stackblitz.com/github/angular-redux/example-app Otherwise it throws mixed content error: