Mysql error wwhen user pick icon by postin
 

Few of our users get mysql error when they select an icon for message by posting

Database error in vBulletin 3.8.1:

Invalid SQL:

SELECT usergroupid FROM forum_icon AS icon
INNER JOIN forum_imagecategorypermission USING (imagecategoryid)
WHERE icon.iconid = 7
AND usergroupid IN (,2,11);

please advise