Force HTTPS / Change graphql URL?

Most functions won't work because Console is flooding with errors like this:

```
Mixed Content: The page at 'https://xxxxxxx.xxxx.us/search' was loaded over HTTPS, but requested an insecure resource 'http://xxxxxxx.xxxx.us:4000/graphql'. This request has been blocked; the content must be served over HTTPS.
```

I have apache reverse proxy set up for subdomain. Setting `WEB_UI_API_URL` in .env didn't help as it for some reason always gets that HTTP with subdomain and port :4000 that obviously will not work.

Any tips?

Start by tracing the WEB_UI_API_URL configuration and the GraphQL request entry point, then reproduce the mixed-content error with the web UI served over HTTPS. Done means the configured HTTPS endpoint is used without the unexpected :4000 port and the affected functions no longer produce blocked requests.

Written by the indexing model from the issue text.