Can't export role mining session

What problem are you observing?

When downloading a role mining session that I created via the UI I get:

{
    "error": "Unauthorized signature."
}

When I try to export it via the Role-Mining API end-point, I get the following error 500:

{
    "message": {
        "locale": "en",
        "localeOrigin": "DEFAULT",
        "text": "RESTEASY003635: No match for accept header"
    },
    "detailCode": "500.0 Internal fault",
    "trackingId": "5fabd1fec7674decbb519302b77fee63"
}

What is the correct behavior?

Until last week I was able to generate a report containing the result of a mining session, and when I tried again this week I’m getting the described errors above.

What product feature is this related to?

Role Insights in Identity Security Cloud.

What are the steps to reproduce the issue?

Go to the Admin UI > Access > Role Insights and generate a Discovery Role session. Save the draft and return to it later on. Try to download the results.

To try the API: Open the drafted session in the Admin UI following the steps above, grab the Session ID and Potential Role ID from the URL and paste those values in a Postman environment configured to run the ISC Beta collection.

Do you have any other information about your environment that may help?

I’m testing this feature in our Prod environment.