Add custom error message in the web interface

Hello everyone,

(OI Manager v.8.1)

Under certain circumstances we are getting following error message in the web interface (Detail of the request, in the 'Information' tab):

"An error occurred while processing your request. Check the application log files or contact that system administrator for this website..."

I wonder if it would be possible to add an additional message when this specific error happens (above or below the current error message)

Thank you