Unexpected Error

The system encountered an error while processing the following request:

/Perpustakaan_Brunei_Darussalam/search/mylists.listdetails.emaildialog:showchooseitem/_SELECT_STRING_PLACEHOLDER_/$B

Error Summary

A component event handler method returned the value Block[itemBlock within search/MyLists:listdetails.emaildialog, at classpath:com/sirsidynix/discovery/client/components/search/EmailDialog.tml, line 106]. Return type org.apache.tapestry5.internal.structure.BlockImpl can not be handled.

Fri Nov 15 00:38:17 BNT 2019