We have an embedded dashboard in an iframe that is now returning an error. The message on the screen is "You do not have permissions to access the resource". The dashboard has worked for months and was working yesterday. None of the permissions have changed. If you open the dashboard in its own browser window, it works just fine. There is a JavaScript error in the Dev Tools Console that says "Error while processing route: dashboard Error".
Edit:
When the dashboard is not embedded in an iframe, you can see request Urls to content items with a token in the Url. Those same requests when in an iframe does NOT include the token, causing the permission issue.
Did anything change recently to cause this issue?