Browser cookies cause NullPointerException when integrated with Confluence

Cause:
java.lang.NullPointerException
at com.atlassian.seraph.util.CookieUtils.setCookie(CookieUtils.java:100)

Cause:
java.lang.NullPointerException
at com.atlassian.seraph.util.CookieUtils.setCookie(CookieUtils.java:100)

Stack Trace: [hide]

java.lang.NullPointerException
at com.atlassian.seraph.util.CookieUtils.setCookie(CookieUtils.java:100)
at com.atlassian.seraph.util.CookieUtils.invalidateCookie(CookieUtils.java:41)
at com.atlassian.seraph.util.CookieUtils.invalidateCookie(CookieUtils.java:55)
at com.atlassian.crowd.integration.seraph.CrowdAuthenticator.autoLoginToCrowd(CrowdAuthenticator.java:195)
at com.atlassian.crowd.integration.seraph.CrowdAuthenticator.isAuthenticated(CrowdAuthenticator.java:137)
at com.atlassian.crowd.integration.seraph.CrowdAuthenticator.getUser(CrowdAuthenticator.java:216)
at com.atlassian.seraph.auth.AbstractAuthenticator.getUser(AbstractAuthenticator.java:44)
at com.atlassian.seraph.filter.SecurityHttpRequestWrapper.getUserPrincipal(SecurityHttpRequestWrapper.java:43)
at com.atlassian.seraph.filter.SecurityHttpRequestWrapper.getRemoteUser(SecurityHttpRequestWrapper.java:25)
at com.atlassian.confluence.util.LoggingContextFilter.doFilter(LoggingContextFilter.java:31)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at com.atlassian.seraph.filter.SecurityFilter.doFilter(SecurityFilter.java:182)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at com.atlassian.seraph.filter.LoginFilter.doFilter(LoginFilter.java:159)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at com.atlassian.confluence.util.ClusterHeaderFilter.doFilter(ClusterHeaderFilter.java:35)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at com.atlassian.johnson.filters.JohnsonFilter.doFilter(JohnsonFilter.java:96)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at com.atlassian.core.filters.gzip.GzipFilter.doFilter(GzipFilter.java:61)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:199)
at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:282)
at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:754)
at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:684)
at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:876)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:619)