javax.servlet.ServletException: Path .layout-main does not start with a "/" character

오늘의 실수.. =ㅂ=

javax.servlet.ServletException: Path .layout-main does not start with a "/" character

org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:286)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449)
javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

--- 해결 --
struts-config.xml에서 타일즈를 사용하겟다는 내용을 추가해줘야 한다;

<plug-in className="org.apache.struts.tiles.TilesPlugin">
  
         <set-property property="definitions-config"    value="/WEB-INF/config/tiles-defs.xml"/>
         <set-property property="definitions-debug"     value="2"/>
         <set-property property="definitions-parser-details"   value="2"/> 
         <set-property property="definitions-parser-validate" value="true"/>
        
  </plug-in>