500 Servlet Exception

/interfaz/reservar.jsp:19: can't open include of 'methods_reservar.jsp'.
'/datos/webs/hotelresb2b-www/interfaz/methods_reservar.jsp' does not exist.

17:  <%@include file="variables.jsp"%>
18:  <%@include file="methods_comuns.jsp"%>
19:  <%@include file="methods_reservar.jsp"%>
20:  <%@include file="methods_gtoscancel.jsp"%>
21:  <%@include file="../xml/api_HotObsPub.jsp"%>


Resin/4.0.38 Server: 'app-0'