javax.faces.FacesException: javax.servlet.ServletException: java.lang.IllegalStateException: Component javax.faces.component.UIViewRoot@14ad592 not ex

Problem

javax.faces.FacesException: javax.servlet.ServletException: java.lang.IllegalStateException: Component javax.faces.component.UIViewRoot@14ad592 not expected type. Expected: javax.faces.component.UIForm. Perhaps you're missing a tag?

Solution:

insert f:view tag into JSP page