When publishing a workbook from Tableau Desktop to a Tableau Public account I get the error: "Unable to complete action An unknown error related to remote content was detected (500) Error Code: C926DA9F"

I’ve been hosting a dashboard in one Tableau Public account for months without any issues, and I can still publish to that account with no errors.

Now I’ve created a new Tableau Public account (where the dashboard should be moved), but when I try to publish there, I keep getting the error C926DA9F.

To troubleshoot, I also tested publishing to another older Tableau Public account that already has several dashboards published — and it fails with the same error.

Has anyone experienced this, or knows why publishing only works on my original account but not on the new (or other) ones?