Kamil created WICKET-6451: ----------------------------- Summary: Real Exception while setting model object is hidden Key: WICKET-6451 URL: https://issues.apache.org/jira/browse/WICKET-6451 Project: Wicket Issue Type: Bug Components: wicket Affects Versions: 8.0.0-M6 Reporter: Kamil Attachments: showcase-hiddenException.zip
When object returns Collections.unmodifiableSet() it is obvious that model object can not be updated. But the exception that was thrown causes me to spend hours until I found out that: {code} Last cause: Could not convert value: [] to type: java.util.Set. Could not find compatible converter. WicketMessage: An error occurred while trying to set the collection attached to [BootstrapMultiSelect [Component id = children]] {code} Is not about converter but about unmodifialble set, because the real exception was hidden! 1)Run the app 2)Click submit 3)Caused by User#L30 -- This message was sent by Atlassian JIRA (v6.4.14#64029)