error in category

[alizayni]

when i go and click on category (1945) in this page http://www.iraqinhistory.com/index.php?option=com_abook&view=categories&id=0&Itemid=179&lang=ar
i get this error

error: 1054

Unknown column 'use_book' in 'order clause' SQL=SELECT CONCAT(a.lastname, " ", a.name) AS author, a.id AS idauthor, a.alias FROM #__abbookauth AS b INNER JOIN #__abauthor AS a ON a.id = b.idauth WHERE b.idbook = 1 ORDER BY use_book

please advice

[federica]

Hi alizayni,
try to delete and create again the related menu item.