ERROR net.jazz.ajax.servlets.StyleSheetServlet

Hi,

I am getting this error over and over again all day long in my RTC 401 logs. Can you tell me what possibly might be causing it and how I can fix it?

2016-09-22 22:42:27,154 [            WebContainer : 404] ERROR net.jazz.ajax.servlets.StyleSheetServlet            - GET https://pro.corp/ccm/web/_style/
?exclude=E~F~G~H~I~J~K~L~O~P~Q~R~S~T~U~V~W~X~Y~Z~a~b~c&include=com.ibm.san.web.bundles.viewlets.IntViewlet.js~com.ibm.team.dashboard.viewlets.web.ui.internal.StaticViewlet.js&ss=JX8DQ&_proxyURL=%2Fccm&locale=es-mxHEADER: Accept = */*
HEADER: Referer = https://pro.corp/ccm/web/projects/PRO
HEADER: Accept-Language = es-MX
HEADER: User-Agent = Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 10.0; WOW64; Trident/8.0; .NET4.0C; .NET4.0E; .NET CLR 2.0.50727; .NET CLR 3.0.30729; .NET CLR 3.5.30729)
HEADER: Accept-Encoding = gzip, deflate
HEADER: $WSCS = RC4-MD5
HEADER: $WSIS = true
HEADER: $WSSC = https
HEADER: $WSPR = HTTP/1.1
HEADER: _WS_HAPRT_WLMVERSION = -1
Parameter: locale = [es-mx]
Parameter: include = [com.pro.web.bundles.viewlets.IntViewlet.js~com.ibm.team.dashboard.viewlets.web.ui.internal.StaticViewlet.js]
Parameter: _proxyURL = [/ccm]
Parameter: exclude = [E~F~G~H~I~J~K~L~O~P~Q~R~S~T~U~V~W~X~Y~Z~a~b~c]
Parameter: ss = [JX8DQ]

java.lang.NullPointerException
    at net.jazz.ajax.model.StyleSheet.bundleUrl(StyleSheet.java:53)
    at net.jazz.ajax.model.StyleSheet.rewriteUrls(StyleSheet.java:220)
    at net.jazz.ajax.model.StyleSheet.write(StyleSheet.java:242)
    at net.jazz.ajax.servlets.ResourceGraph.writeCSS(ResourceGraph.java:295)
    at net.jazz.ajax.servlets.StyleSheetServlet.write(StyleSheetServlet.java:24)
    at net.jazz.ajax.servlets.AbstractResourceServlet.doGet(AbstractResourceServlet.java:73)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:718)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
    at net.jazz.ajax.servlets.LoggingHttpServlet.service(LoggingHttpServlet.java:35)
    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:68)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
    at org.eclipse.equinox.servletbridge.BridgeServlet.service(BridgeServlet.java:120)
    at com.ibm.team.repository.server.servletbridge.JazzServlet.service(JazzServlet.java:68)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
    at com.ibm.ws.cache.servlet.ServletWrapper.serviceProxied(ServletWrapper.java:307)
    at com.ibm.ws.cache.servlet.CacheHook.handleFragment(CacheHook.java:576)
    at com.ibm.ws.cache.servlet.CacheHook.handleServlet(CacheHook.java:250)
    at com.ibm.ws.cache.servlet.ServletWrapper.service(ServletWrapper.java:259)
    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.team.repository.server.servletbridge.BridgeFilter.processDelegate(BridgeFilter.java:133)
    at com.ibm.team.repository.server.servletbridge.BridgeFilter.doFilter(BridgeFilter.java:154)
    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:181)
    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:1592)
    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.ssl.channel.impl.SSLReadServiceContext$SSLReadCompletedCallback.complete(SSLReadServiceContext.java:1784)
    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:1613)

thanks