Unexpected Error

The system encountered an error while processing the following request:
/en_GB/default/print/list

Error Summary

Render queue error in BeginRender[Print:if_1]: Failure reading parameter 'test' of component Print:if_1: Property 'printState' (within property expression 'session.printState.detail', of com.sirsidynix.discovery.client.pages.Print@4263408d) is null.
Sat May 25 18:57:41 EST 2019