[RESOLVIDO]Problema com Login JSF => java.lang.NullPointerException: Erro de argumento:

Bem, estou tentando implementar o Login na minha aplicação, mas estou tendo o seguinte erro:

java.lang.NullPointerException: Erro de argumento: O parâmetro key é nulo

Estranho … Coloquei alguns Println pra ver pode onde ele passava e estou tendo o seguinte resultado:

INFO: LOGAR //BEAN LOGIN
INFO: Login Tela: admin //BEAN LOGIN
INFO: Lenha Tela: admin //BEAN LOGIN
INFO: REPOSITORY AUTENTICA  //REPOSITORY LOGIN
INFO: try  //REPOSITORY LOGIN
INFO: Hibernate: 
    /* Select
        l 
    from
        Login as l 
    Where
        l.usuario =:usuario 
        AND l.senha =:senha */ select
            login0_.id as id261_,
            login0_.confirmasenha as confirma2_261_,
            login0_.senha as senha261_,
            login0_.usuario as usuario261_ 
        from
            Login login0_ 
        where
            login0_.usuario=? 
            and login0_.senha=? limit ?

Ele chega a montar o Select … porém eu tenho esse erro que estou encafifado … “Erro de argumento: O parâmetro key é nulo”
Mas qual argumento ?? Não estou entendendo …
Bem vou postar abaixo o erro completo:

AVISO: StandardWrapperValve[Faces Servlet]: PWC1406: Servlet.service() for servlet Faces Servlet threw exception
javax.faces.el.EvaluationException: java.lang.NullPointerException: Erro de argumento: O parâmetro key é nulo
	at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:102)
	at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
	at javax.faces.component.UICommand.broadcast(UICommand.java:315)
	at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794)
	at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259)
	at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:82)
	at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
	at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)
	at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1523)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:343)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:215)
	at filtros.JPAFilter.doFilter(JPAFilter.java:37)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:215)
	at filtros.LoginFilter.doFilter(LoginFilter.java:34)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:215)
	at filtros.JPAFilter.doFilter(JPAFilter.java:37)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:215)
	at filtros.LoginFilter.doFilter(LoginFilter.java:34)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:215)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:277)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:188)
	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:641)
	at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:97)
	at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:85)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:185)
	at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:325)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:226)
	at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:165)
	at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:791)
	at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:693)
	at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:954)
	at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:170)
	at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:135)
	at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:102)
	at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:88)
	at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:76)
	at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:53)
	at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:57)
	at com.sun.grizzly.ContextTask.run(ContextTask.java:69)
	at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:330)
	at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:309)
	at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.NullPointerException: Erro de argumento: O parâmetro key é nulo
	at com.sun.faces.util.Util.notNull(Util.java:221)
	at com.sun.faces.context.SessionMap.get(SessionMap.java:112)
	at managedbeans.LoginBean.logar(LoginBean.java:92)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at com.sun.el.parser.AstValue.invoke(AstValue.java:234)
	at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:297)
	at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:98)
	at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88)
	... 46 more

Obrigado …

Opa .. foi mal .. Irei postar .. Meu Bean:

public String logar(){
		System.out.println("LOGAR");
		System.out.println("Login Tela: "+login.getUsuario());
		System.out.println("Lenha Tela: "+login.getSenha());
		LoginRepository repository = new LoginRepository(this.entityManager);
		Login compara = repository.autentica(login);
		
		if (compara.getUsuario().equals("") || compara.getUsuario() == null){
			
			FacesContext.getCurrentInstance().addMessage("consulta:id", new FacesMessage("Usuário ou senha Errada"));
			usuario = new String();
			senha = new String();
			login = new Login();
			return "login";
		}
		else {
			HttpSession sessioon = (HttpSession) FacesContext.getCurrentInstance().getExternalContext().getSession(false);
			sessioon.setAttribute("autenticado", true);
			user = (String) FacesContext.getCurrentInstance().getExternalContext().getSessionMap().get(usuario); 
				
			return "home";
		}	
		/*if ("admin".equals(this.usuario.toLowerCase()) && "admin".equals(this.senha.toLowerCase())){*/	
			
	}

Repository

public Login autentica(Login login){
		System.out.println("REPOSITORY AUTENTICA");
		Query query = this.manager.createQuery("Select l from Login as l Where l.usuario =:usuario AND l.senha =:senha");
		
		query.setParameter("usuario", login.getUsuario());
		query.setParameter("senha", login.getSenha());
		
		try {
		
			System.out.println("try");
			return (Login)query.getSingleResult();
	
		} catch (NoResultException e) {
			e.printStackTrace();
			System.out.println("catch");
			return null;
		}
		 
	}

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