Commonly at the Support desk we have users communicating that they cannot open a report view, more often than not, this is because the report view is set up to filter on a column that has since been removed or adjusted.

Check to see whether the "Filters" button is pressed, however there are no filters actually applied to the report.

If you un-check this filters box and then save that view, you will then be able to view and run the report as normal - you can still add Filters as you wish following on from this.