Unexpected Error

The system encountered an error while processing the following request:

/en_GB/default/search/results.displaypanel.displaycell.resultcoverimage.coverimage.any_3:loadimage/ent:$002f$002fSD_ILS$002f0$002fSD_ILS:442706/syndeticsImg8/ISBN:9781108415583$002c$003b

Error Summary

A component event handler method returned the value { "image" : "https://secure.syndetics.com/index.aspx?type=xw12&client=erounivinst&upc=&oclc=&isbn=9781108415583/MC.GIF", "imageid" : "syndeticsImg8" }. Return type org.apache.tapestry5.json.JSONObject can not be handled.

Thu Apr 04 00:07:37 BST 2019