[CompletionException: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException]

package controllers;

public class LoginController extends Controller{

private FormFactory formFactory;

private Environment env;

@Inject
public LoginController(Environment e, FormFactory f){
    this.env = e;
    this.formFactory = f;
}

public Result login(){

    Form<Login> loginForm = formFactory.form(Login.class);

    return ok(login.render(loginForm));

}

public Result loginSubmit(){

    Form<Login> loginForm = formFactory.form(Login.class).bindFromRequest();

    if(loginForm.hasErrors()){

        return badRequest(login.render(loginForm));

    }
    else{

        session().clear();

        session("email", loginForm.get().getEmail());

    }

    return redirect(controllers.routes.HomeController.index());
}
}

package models;

@Entity
public class User extends Model {

@Id
private String email;

@Constraints.Required
private String role;
@Constraints.Required
private String name;
@Constraints.Required
private  String password;

public User(String role, String email, String password) {

    this.role = role;
    this.email = email;
    this.password = password;
}

public User() {
}

GETTERS AND SETTERS FOR EACH VARIABLE HERE

public static Finder<String,User> find = new Finder<String,User>(User.class);

public static List<User> findAll(){
    return User.find.all();
}

public static User authenticate(String email, String password){
    User user = null;

    if(find.where().eq("email",email).eq("password",password).findUnique() != null){

        user = find.ref(email);

    }

    return user;
}
}

public class Login {

private String email;
private String password;

public static List<User> findAll(){
    return User.find.all();
}

public static User authenticate(String email, String password){
    return  find.where().eq("email",email).eq("password",password).findUnique();
}

  GETTERS AND SETTERS HERE
}