Oracle Error Message
ORA-31135: Resource has already been rendered
Reason for the Error
One of the following has occurred: 1) Attempted to invoke setRender* method after the resource was rendered through a setRender* method or after data was written to the output stream. 2) Attempted to access the output stream of the resource after a setRender* method was executed on the resource.
Solution
Remove the method causing the problem.