' for property 'entityManagerFactory'; nested exception is java.lang.IllegalStateException: Cannot convertvalue of type 'java.lang.String' to required type 'javax.persistence.EntityManagerFactory' for propertyvalue of type 'java.lang.String
javax.servlet.http.HttpServlet.service(HttpServlet.java:617)public final class EMF { .createEntityManagerFactory("JPATest");
}
public static EntityManagerFactory