Unable to load addressable assets per HTTPS

Any ideas what this exactly means and how to solve it. The path is valid and I am able to download it manually.
```
Laden von gemischten aktiven Inhalten "<path>/catalog_2019.01.21.19.30.02.hash" wurde blockiert.[Weitere Informationen]
```

 

Update: Reason was likely a request via http when it the WebGL player was served via https. Protocol relative url // or https:// should both work.

 

Updated the title to reflect the issue. It looks like unity is unable to request the resources per https. We are able to download the file via browser by entering the url with http as well as https but from a webgl build or unity3d playmode packed it fails.

Loading with a local project from the file system also works.

 

@Aurimas-Cernius Thank you for pointing it out. After double and triple checking I've found the difference.

While on our test-server everything worked in production it suddenly failed. The difference was minor: https://www.<hostname> vs https://<hostname>. This was no problem during both unit tests (StandaloneWindows64 UnityTest with UnityWebRequest) and our test server (WebGL) but failed horribly on production. I assume it is because the request was blocked by CORS and settings of both servers might have differed.