Corrupt Project Dashboard after upgrading from version 4.0.1 to version 4.0.4

We recently upgraded from Jazz RTC 4.0.1 to RTC 4.0.4.
After the upgrade 2 Project Dashboards cannot be loaded anymore.
Other Project Areas are not affected.

Can anyone help?

The following error is displayed when opening the project dashboard:

We're Sorry...
An error occurred while retrieving the dashboard:
HTTP/1.1 500 Internal Server Error
/ccm/web/dojo/../../service/com.ibm.team.dashboard.common.internal.service.IDashboardRestService/dashboard?projectName=XXXXXXXXXXXXXXXXXXXXXXX

com.ibm.team.jfs.app.http.HttpInternalServerErrorException:
Internal Server Error
Error 500: an error occured running query:PREFIX dc: &lt;http://purl.org/dc/terms/&gt; PREFIX jdb: &lt;http://jazz.net/xmlns/prod/jazz/dashboard/1.0/&gt; SELECT ?resource WHERE {  ?resource a jdb:Dashboard &#59;            dc:created ?created &#59;            dc:type &quot;com.ibm.team.dashboard&quot; &#59;            dc:relation &lt;https://<URL-of-JAZZ-server>/ccm/process/project-areas/_rG8YPxBlEeOdL6pSy1XUsw&gt; . } ORDER BY ?created LIMIT 1

    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:56)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:39)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:527)
    at com.ibm.team.jfs.app.util.ErrorUtils.handleErrorResponse(ErrorUtils.java:476)
    at com.ibm.team.jfs.app.util.ErrorUtils.handleErrorResponse(ErrorUtils.java:401)
    at com.ibm.team.dashboard.service.internal.jfs.HttpUtil.throwJfsHttpException(HttpUtil.java:252)
    at com.ibm.team.dashboard.service.internal.jfs.HttpUtil.checkResponse(HttpUtil.java:86)
    at com.ibm.team.dashboard.service.internal.jfs.HttpResourceClient.executeRequest(HttpResourceClient.java:341)
    at com.ibm.team.dashboard.service.internal.jfs.DashboardClient.runSparqlQueryRaw(DashboardClient.java:240)
    at com.ibm.team.dashboard.service.internal.jfs.DashboardClient.runSparqlQuery(DashboardClient.java:215)
    at com.ibm.team.dashboard.service.internal.legacy.LegacyDashboardRestService.getDashboard(LegacyDashboardRestService.java:286)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:60)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
    at java.lang.reflect.Method.invoke(Method.java:611)
    at org.eclipse.soda.sat.core.internal.record.ExportProxyServiceRecord.invoke(ExportProxyServiceRecord.java:361)
    at org.eclipse.soda.sat.core.internal.record.ExportProxyServiceRecord.access$0(ExportProxyServiceRecord.java:347)
    at org.eclipse.soda.sat.core.internal.record.ExportProxyServiceRecord$ExportedServiceInvocationHandler.invoke(ExportProxyServiceRecord.java:56)
    at com.sun.proxy.$Proxy1178.getDashboard(Unknown Source)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:60)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
    at java.lang.reflect.Method.invoke(Method.java:611)
    at com.ibm.team.repository.servlet.AbstractTeamServerServlet.doModelledRestService(AbstractTeamServerServlet.java:555)
    at com.ibm.team.repository.servlet.AbstractTeamServerServlet.handleRequest2(AbstractTeamServerServlet.java:2360)
    at com.ibm.team.repository.servlet.AbstractTeamServerServlet.handleRequest(AbstractTeamServerServlet.java:2160)
    at com.ibm.team.repository.servlet.AbstractTeamServerServlet.service(AbstractTeamServerServlet.java:1988)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:668)
    at org.eclipse.equinox.http.registry.internal.ServletManager$ServletWrapper.service(ServletManager.java:180)
    at org.eclipse.equinox.http.servlet.internal.ServletRegistration.service(ServletRegistration.java:61)
    at org.eclipse.equinox.http.servlet.internal.ProxyServlet.processAlias(ProxyServlet.java:126)
    at org.eclipse.equinox.http.servlet.internal.ProxyServlet.service(ProxyServlet.java:76)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:668)
    at org.eclipse.equinox.servletbridge.BridgeServlet.service(BridgeServlet.java:120)
    at com.ibm.team.repository.server.servletbridge.JazzServlet.service(JazzServlet.java:74)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:668)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1225)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:775)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:457)
    at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:178)
    at com.ibm.ws.webcontainer.filter.WebAppFilterChain.invokeTarget(WebAppFilterChain.java:136)
    at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:97)
    at com.ibm.team.repository.server.servletbridge.BridgeFilter.processDelegate(BridgeFilter.java:139)
    at com.ibm.team.repository.server.servletbridge.BridgeFilter.doFilter(BridgeFilter.java:172)
    at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:195)
    at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:91)
    at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:928)
    at com.ibm.ws.webcontainer.filter.WebAppFilterManager.invokeFilters(WebAppFilterManager.java:1025)
    at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:87)
    at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:908)
    at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1662)
    at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:195)
    at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:453)
    at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewRequest(HttpInboundLink.java:515)
    at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.processRequest(HttpInboundLink.java:306)
    at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:83)
    at com.ibm.ws.ssl.channel.impl.SSLReadServiceContext$SSLReadCompletedCallback.complete(SSLReadServiceContext.java:1784)
    at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:166)
    at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
    at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
    at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138)
    at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:204)
    at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:775)
    at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:905)
    at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1691)