[ServletException in:idioma.jsp] javax.servlet.jsp.JspTagException: javax.servlet.jsp.JspException: An error occurred while evaluating custom action attribute "test" with value "${UserContainer.personalizacionVerIdioma == true}": An error occurred while getting property "personalizacionVerIdioma" from an instance of class es.gadd.opensiac.web.util.UserContainer (java.lang.NullPointerException)'