I have written the below code in tiles.xml file
<definition name="template" template="/WEB-INF/jsp/mainTemplate.jsp">
<put-attribute name="title" value="Default title"/>
<put-attribute name="header" expression="${requestScope.header}" />
<put-attribute name="leftMenu" value="/WEB-INF/jsp/leftside.jsp"/>
<put-attribute name="body" value=""/>
<put-attribute name="filters" value="/WEB-INF/jsp/filters.jsp"/>
<put-attribute name="footer" expression="${requestScope.footer)"/>
</definition>
When I ran the code I am getting the following error
"Attribute "expression" must be declared for element type "put-attribute".
I am using tile2.2.2
Please help to fix this issue