Error

VelocityViewServlet : Error processing a template for path '/sobre/noticias-exibe.vm'

org.hibernate.exception.GenericJDBCException: could not initialize a collection: [edu.bj.gestaoconteudo.model.Conteudo.tags#86406659]
java.lang.RuntimeException: org.hibernate.exception.GenericJDBCException: could not initialize a collection: [edu.bj.gestaoconteudo.model.Conteudo.tags#86406659]
	at edu.bj.publicador.webapp.velocity.IncludeStructureDirective.render(IncludeStructureDirective.java:120)
	at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:175)
	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:336)
	at org.apache.velocity.Template.merge(Template.java:328)
	at org.apache.velocity.Template.merge(Template.java:235)
	at org.apache.velocity.tools.view.servlet.VelocityViewServlet.performMerge(VelocityViewServlet.java:805)
	at org.apache.velocity.tools.view.servlet.VelocityViewServlet.mergeTemplate(VelocityViewServlet.java:762)
	at edu.bj.publicador.webapp.velocity.PublicadorVelocityServlet.doRequest(PublicadorVelocityServlet.java:117)
	at org.apache.velocity.tools.view.servlet.VelocityViewServlet.doGet(VelocityViewServlet.java:509)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:638)
	at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:444)
	at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:382)
	at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:310)
	at edu.bj.publicador.webapp.servlet.URLAmigavelServlet.handleRequest(URLAmigavelServlet.java:55)
	at edu.bj.publicador.webapp.servlet.URLAmigavelServlet.doGet(URLAmigavelServlet.java:24)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at edu.bj.publicador.webapp.servlet.SiteConfigurationFilter.doFilterInternal(SiteConfigurationFilter.java:52)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198)
	at edu.bj.webapp.filter.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:34)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
	at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190)
	at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92)
	at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
	at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
	at java.lang.Thread.run(Unknown Source)
Caused by: org.hibernate.exception.GenericJDBCException: could not initialize a collection: [edu.bj.gestaoconteudo.model.Conteudo.tags#86406659]
	at org.hibernate.exception.SQLStateConverter.handledNonSpecificException(SQLStateConverter.java:126)
	at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:114)
	at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)
	at org.hibernate.loader.Loader.loadCollection(Loader.java:2022)
	at org.hibernate.loader.collection.CollectionLoader.initialize(CollectionLoader.java:59)
	at org.hibernate.persister.collection.AbstractCollectionPersister.initialize(AbstractCollectionPersister.java:587)
	at org.hibernate.event.def.DefaultInitializeCollectionEventListener.onInitializeCollection(DefaultInitializeCollectionEventListener.java:83)
	at org.hibernate.impl.SessionImpl.initializeCollection(SessionImpl.java:1743)
	at org.hibernate.collection.AbstractPersistentCollection.initialize(AbstractPersistentCollection.java:366)
	at org.hibernate.collection.AbstractPersistentCollection.read(AbstractPersistentCollection.java:108)
	at org.hibernate.collection.PersistentBag.iterator(PersistentBag.java:272)
	at org.apache.velocity.util.introspection.UberspectImpl.getIterator(UberspectImpl.java:116)
	at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:289)
	at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:175)
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
	at edu.bj.publicador.webapp.velocity.BodyDirective.render(BodyDirective.java:43)
	at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:175)
	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:336)
	at edu.bj.publicador.webapp.velocity.AbstractDirective.renderTemplate(AbstractDirective.java:263)
	at edu.bj.publicador.webapp.velocity.AbstractDirective.renderTemplate(AbstractDirective.java:278)
	at edu.bj.publicador.webapp.velocity.IncludeStructureDirective.render(IncludeStructureDirective.java:112)
	... 48 more
Caused by: com.microsoft.sqlserver.jdbc.SQLServerException: A conexão está fechada.
	at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDriverError(SQLServerException.java:190)
	at com.microsoft.sqlserver.jdbc.SQLServerConnection.checkClosed(SQLServerConnection.java:388)
	at com.microsoft.sqlserver.jdbc.SQLServerConnection.prepareStatement(SQLServerConnection.java:2166)
	at com.microsoft.sqlserver.jdbc.SQLServerConnection.prepareStatement(SQLServerConnection.java:1853)
	at org.apache.commons.dbcp.DelegatingConnection.prepareStatement(DelegatingConnection.java:185)
	at org.apache.commons.dbcp.PoolingDataSource$PoolGuardConnectionWrapper.prepareStatement(PoolingDataSource.java:278)
	at org.hibernate.jdbc.AbstractBatcher.getPreparedStatement(AbstractBatcher.java:534)
	at org.hibernate.jdbc.AbstractBatcher.getPreparedStatement(AbstractBatcher.java:452)
	at org.hibernate.jdbc.AbstractBatcher.prepareQueryStatement(AbstractBatcher.java:161)
	at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1573)
	at org.hibernate.loader.Loader.doQuery(Loader.java:696)
	at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:259)
	at org.hibernate.loader.Loader.loadCollection(Loader.java:2015)
	... 65 more