I have created the Demonstration - Customer Orders application from the customers / orders / products sample data load from apex.oracle.com.
On the Customer Orders screen, I tried to group by customer id and it caused the follow error:
APEXIR_VIEW_DOES_NOT_EXIST:"GROUP_BY" Contact your application administrator.
I cannot use the reset button on the screen, because the screen does not appear.
How do I reset the screen or fix the error?