Error: "<domain_name>.sharepoint.com refused to connect"

[FrazzApps]

I'm trying to display a SharePoint page on my App but I'm getting a "<domain_name>.sharepoint.com refused to connect" error.

I've tried the URL in a iFrame tester and the error details are:
Refused to frame 'https://<domain_name>.sharepoint.com/' because an ancestor violates the following Content Security Policy directive: "frame-ancestors 'self' teams.microsoft.com *.teams.microsoft.com *.skype.com *.teams.microsoft.us local.teams.office.com *.powerapps.com *.yammer.com engage.cloud.microsoft *.officeapps.live.com *.office.com *.microsoft365.com *.stream.azure-test.net *.microsoftstream.com *.dynamics.com *.microsoft.com onedrive.live.com *.onedrive.live.com securebroker.sharepointonline.com".

however the app is running under the URL:
https://apps.powerapps.com/play/e/default...........
so I would have thought it should work given *.powerapps.com is listed above

Have you run into this, any thoughts on how to resolve it?

[jordiba90]

I guess the reason is that iframe cannot login to Sharepoint. Just external links.

[Caspian11]

I also have this same problem. The component won’t connect to SharePoint.
Update - It won't connect to anything.