[VRaptor 3] Caused by: java.io.NotSerializableException: br.com.caelum.vraptor.core.DefaultResu

Boa noite senhores(as),
estou com um problema com o VRaptor,
o problema não é nada impeditivo porém estou recebendo o seguinte erro no Console

Caused by: java.io.NotSerializableException: br.com.caelum.vraptor.core.DefaultResult

não sei se configurei alguma coisa errada e gostaria da ajuda de vocês
para ser mais especifico o erro acontece em qualquer requisição,
tenho varias classes utilizando injeção de dependencia e outras implementando ComponentFactory
segue o meu web.xml e o stack trace,

Obrigado pela ajuda…

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd" >
<web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
	version="2.4">

	<display-name>pVendasWeb</display-name>

	<welcome-file-list>
		<welcome-file>/include/redirect.jsp</welcome-file>
	</welcome-file-list>

	<filter>
		<filter-name>sitemesh</filter-name>
		<filter-class>com.opensymphony.sitemesh.webapp.SiteMeshFilter</filter-class>
	</filter>

	<filter-mapping>
		<filter-name>sitemesh</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>

	<filter>
		<filter-name>vraptor</filter-name>
		<filter-class>br.com.caelum.vraptor.VRaptor</filter-class>
	</filter>

	<filter-mapping>
		<filter-name>vraptor</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>
</web-app>
SEVERE: IOException while loading persisted sessions: java.io.WriteAbortedException: writing aborted; java.io.NotSerializableException: br.com.caelum.vraptor.core.DefaultResult
java.io.WriteAbortedException: writing aborted; java.io.NotSerializableException: br.com.caelum.vraptor.core.DefaultResult
	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1332)
	at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1946)
	at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1870)
	at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1752)
	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1328)
	at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1946)
	at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1870)
	at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1752)
	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1328)
	at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1946)
	at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1870)
	at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1752)
	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1328)
	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:350)
	at org.apache.catalina.session.StandardSession.readObject(StandardSession.java:1613)
	at org.apache.catalina.session.StandardSession.readObjectData(StandardSession.java:1073)
	at org.apache.catalina.session.StandardManager.doLoad(StandardManager.java:284)
	at org.apache.catalina.session.StandardManager.load(StandardManager.java:204)
	at org.apache.catalina.session.StandardManager.startInternal(StandardManager.java:470)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:148)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5241)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:148)
	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1033)
	at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:774)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:148)
	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1033)
	at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:291)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:148)
	at org.apache.catalina.core.StandardService.startInternal(StandardService.java:443)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:148)
	at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:727)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:148)
	at org.apache.catalina.startup.Catalina.start(Catalina.java:621)
	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 org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:322)
	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:450)
Caused by: java.io.NotSerializableException: br.com.caelum.vraptor.core.DefaultResult
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1164)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
	at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:330)
	at org.apache.catalina.session.StandardSession.writeObject(StandardSession.java:1689)
	at org.apache.catalina.session.StandardSession.writeObjectData(StandardSession.java:1090)
	at org.apache.catalina.session.StandardManager.doUnload(StandardManager.java:411)
	at org.apache.catalina.session.StandardManager.unload(StandardManager.java:353)
	at org.apache.catalina.session.StandardManager.stopInternal(StandardManager.java:497)
	at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:230)
	at org.apache.catalina.core.StandardContext$4.run(StandardContext.java:5465)
	at java.lang.Thread.run(Thread.java:662)

se isso só aparece na inicialização e/ou finalização do servidor, pode ignorar esse erro. Isso é o tomcat tentando salvar/recuperar a sessão do usuário.

Opá, boa noite Lucas,
obrigado pela resposta,

está certo vou ignorar o erro, muito obrigado.