Demo doesn't work

[niutech]

The Greenfield demo web app doesn't load e.g. web:simple-shm-web/app.html due to Mixed Content: The page at 'https://desktop.greenfield.app/' was loaded over HTTPS, but requested an insecure resource 'http://desktop.greenfield.app/simple-shm-web/app.html'. This request has been blocked; the content must be served over HTTPS.

Uncaught (in promise) TypeError: Failed to fetch
    at Wi.launch (index-a31d8f78.js:135:15984)
    at rs (index-a31d8f78.js:135:28676)
    at Object.onLaunchNew (index-a31d8f78.js:135:29444)
    at Object.keypressfalse (index-a31d8f78.js:135:29788)
    at HTMLInputElement.di (index-a31d8f78.js:1:5324)