The resource did not process correctly

org.hibernate.exception.JDBCConnectionException: could not prepare statement
	at org.hibernate.exception.internal.SQLStateConversionDelegate.convert(SQLStateConversionDelegate.java:132)
	at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:49)
	at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:124)
	at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:193)
	at org.hibernate.engine.jdbc.internal.StatementPreparerImpl.prepareQueryStatement(StatementPreparerImpl.java:157)
	at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1881)
	at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1858)
	at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1838)
	at org.hibernate.loader.Loader.doQuery(Loader.java:906)
	at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:348)
	at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:318)
	at org.hibernate.loader.Loader.loadEntity(Loader.java:2145)
	at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:82)
	at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:72)
	at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:3939)
	at org.hibernate.event.internal.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:462)
	at org.hibernate.event.internal.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:431)
	at org.hibernate.event.internal.DefaultLoadEventListener.load(DefaultLoadEventListener.java:208)
	at org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:264)
	at org.hibernate.event.internal.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:152)
	at org.hibernate.internal.SessionImpl.fireLoad(SessionImpl.java:1053)
	at org.hibernate.internal.SessionImpl.access$2000(SessionImpl.java:173)
	at org.hibernate.internal.SessionImpl$IdentifierLoadAccessImpl.load(SessionImpl.java:2449)
	at org.hibernate.internal.SessionImpl.get(SessionImpl.java:949)
	at sun.reflect.GeneratedMethodAccessor147.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.hibernate.context.internal.ThreadLocalSessionContext$TransactionProtectionWrapper.invoke(ThreadLocalSessionContext.java:352)
	at com.sun.proxy.$Proxy216.get(Unknown Source)
	at org.dspace.core.AbstractHibernateDAO.findByID(AbstractHibernateDAO.java:75)
	at org.dspace.content.BitstreamServiceImpl.find(BitstreamServiceImpl.java:69)
	at org.dspace.content.BitstreamServiceImpl.findByIdOrLegacyId(BitstreamServiceImpl.java:449)
	at org.dspace.content.BitstreamServiceImpl.findByIdOrLegacyId(BitstreamServiceImpl.java:41)
	at org.dlcorp.webui.flowpaper.FlowPaperFilter.doFilter(FlowPaperFilter.java:148)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.dspace.utils.servlet.DSpaceWebappServletFilter.doFilter(DSpaceWebappServletFilter.java:78)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:200)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:493)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
	at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:679)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:660)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:660)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:798)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:806)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1498)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:750)
Caused by: org.postgresql.util.PSQLException: This connection has been closed.
	at org.postgresql.jdbc.PgConnection.checkClosed(PgConnection.java:806)
	at org.postgresql.jdbc.PgConnection.prepareStatement(PgConnection.java:1624)
	at org.postgresql.jdbc.PgConnection.prepareStatement(PgConnection.java:418)
	at org.apache.commons.dbcp2.DelegatingConnection.prepareStatement(DelegatingConnection.java:293)
	at org.apache.commons.dbcp2.DelegatingConnection.prepareStatement(DelegatingConnection.java:293)
	at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$5.doPrepare(StatementPreparerImpl.java:159)
	at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:183)
	... 54 more