Servlet Exception errors

Hello team,

I am using RAM 7.5.0.2. Below is an error that we encountered in the logs. Any idea why this occured?

Below is the snapshot of the asset activity when this error happened -

[10/08/13 18:46:28 GMT] CRRAM0001E  6728441 ERROR web pagecode.error.Error - 4B44FAF7-FB11-853F-4A7C-B105C15AB76A - javax.servlet.ServletException
 at javax.faces.webapp.FacesServlet.service(FacesServlet.java:277)
 at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1657)
 at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1597)
 at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:131)
 at com.ibm.ram.repository.web.security.RAMServletFilter.doFilter(RAMServletFilter.java:514)
 at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:188)
 at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:116)
 at com.ibm.ram.repository.web.filters.JavascriptSecurityFilter.doFilter(JavascriptSecurityFilter.java:33)
 at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:188)
 at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:116)
 at com.ibm.ram.repository.web.filters.GZipFilter.doFilter(GZipFilter.java:42)
 at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:188)
 at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:116)
 at com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:77)
 at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:908)
 at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:934)
 at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:502)
 at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:179)
 at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:91)
 at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:864)
 at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1583)
 at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:186)
 at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:452)
 at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewRequest(HttpInboundLink.java:511)
 at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.processRequest(HttpInboundLink.java:305)
 at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:83)
 at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)
 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:1604)
Caused by: java.lang.IllegalArgumentException
 at sun.text.normalizer.ReplaceableUCharacterIterator.<init>(ReplaceableUCharacterIterator.java:54)
 at sun.text.normalizer.UCharacterIterator.getInstance(UCharacterIterator.java:78)
 at sun.text.normalizer.NormalizerBase.setText(NormalizerBase.java:998)
 at java.text.CollationElementIterator.setText(CollationElementIterator.java:491)
 at java.text.RuleBasedCollator.compare(RuleBasedCollator.java:364)
 at com.ibm.ram.repository.security.UserSearchUtilities$3.compare(UserSearchUtilities.java:209)
 at com.ibm.ram.repository.security.UserSearchUtilities$3.compare(UserSearchUtilities.java:1)
 at java.util.Arrays.mergeSort(Arrays.java:2874)
 at java.util.Arrays.mergeSort(Arrays.java:2887)
 at java.util.Arrays.mergeSort(Arrays.java:2886)
 at java.util.Arrays.mergeSort(Arrays.java:2886)
 at java.util.Arrays.mergeSort(Arrays.java:2887)
 at java.util.Arrays.mergeSort(Arrays.java:2887)
 at java.util.Arrays.sort(Arrays.java:3251)
 at java.util.Arrays.sort(Arrays.java:3269)
 at com.ibm.ram.repository.security.UserSearchUtilities.sortResults(UserSearchUtilities.java:206)
 at com.ibm.ram.repository.web.users.UserSearchUtilities.sortResults(UserSearchUtilities.java:96)
 at com.ibm.ram.repository.web.jsf.components.UIAttributeInput.encodeUser(UIAttributeInput.java:1584)
 at com.ibm.ram.repository.web.jsf.components.UIAttributeInput.encodeBegin(UIAttributeInput.java:977)
 at com.ibm.faces.renderkit.html_extended.Utils.encodeComponent(Utils.java:183)
 at com.ibm.faces.renderkit.html_extended.DataTableRenderer.encodeChildren(DataTableRenderer.java:1084)
 at com.ibm.faces.renderkit.DefaultAjaxRenderer.encodeChildren(DefaultAjaxRenderer.java:73)
 at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:836)
 at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:234)
 at com.sun.faces.renderkit.html_basic.GroupRenderer.encodeChildren(GroupRenderer.java:118)
 at com.ibm.faces.renderkit.DefaultAjaxRenderer.encodeChildren(DefaultAjaxRenderer.java:73)
 at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:836)
 at javax.faces.component.UIComponent.encodeAll(UIComponent.java:936)
 at javax.faces.render.Renderer.encodeChildren(Renderer.java:148)
 at com.ibm.faces.renderkit.DefaultAjaxRenderer.encodeChildren(DefaultAjaxRenderer.java:73)
 at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:836)
 at javax.faces.component.UIComponent.encodeAll(UIComponent.java:936)
 at javax.faces.component.UIComponent.encodeAll(UIComponent.java:942)
 at javax.faces.component.UIComponent.encodeAll(UIComponent.java:942)
 at com.sun.faces.application.ViewHandlerImpl.doRenderView(ViewHandlerImpl.java:292)
 at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:223)
 at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:114)
 at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
 at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
 at javax.faces.webapp.FacesServlet.service(FacesServlet.java:266)
 ... 33 more

Thanks,

Sripriya