I have 2 PowerBI reports that have been running for the past 3 weeks with a schedule refresh of every 30 minutes from OneDrive and SharePoint data sources and were workign fine. Suddenly today they have both failed to refresh online (at 18:00) with the error being an issue processing data in the dataset. I checked a few other reports in the workspace and other workspaces and they have had similar issues. They have been fine earlier in the day and the past 3 weeks.
I did a manual refresh from PowerBI desktop and it ran fine and updated but the online schedule (and online manual) refresh keeps failing. I tried to re-publish the report to the workspace but I got an Internal (500) server error.
Is there an issue with Microsoft servers as looking at the service status online everything seems to be ok? Is anyone else experiencing this issue or could help fix this?