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java.lang.IllegalStateException: 	at org.apache.catalina.connector.ResponseFacade.sendError(ResponseFacade.java:407)	at javax.servlet.http.HttpServletResponseWrapper.sendError(HttpServletResponseWrapper.java:108)	at com.atlassian.confluence.servlet.FourOhFourErrorLoggingFilter$1.sendError(FourOhFourErrorLoggingFilter.java:53)	at javax.servlet.http.HttpServletResponseWrapper.sendError(HttpServletResponseWrapper.java:108)	at com.atlassian.core.filters.HeaderSanitisingResponseWrapper.sendError(HeaderSanitisingResponseWrapper.java:103)	at javax.servlet.http.HttpServletResponseWrapper.sendError(HttpServletResponseWrapper.java:108)	at com.atlassian.confluence.web.filter.DebugFilter$LoggingResponseWrapper.sendError(DebugFilter.java:168)	at javax.servlet.http.HttpServletResponseWrapper.sendError(HttpServletResponseWrapper.java:108)	at com.atlassian.oauth.serviceprovider.internal.servlet.OAuthFilter$OAuthWWWAuthenticateAddingResponse.sendError(OAuthFilter.java:147)	at com.atlassian.seraph.auth.DefaultAuthenticator.getUserFromBasicAuthentication(DefaultAuthenticator.java:550)	at com.atlassian.seraph.auth.DefaultAuthenticator.getUser(DefaultAuthenticator.java:336)	at com.atlassian.confluence.user.ConfluenceAuthenticator.getUser(ConfluenceAuthenticator.java:135)	at com.atlassian.seraph.filter.SecurityFilter.doFilter(SecurityFilter.java:125)	at com.atlassian.confluence.web.filter.ConfluenceSecurityFilter.doFilter(ConfluenceSecurityFilter.java:27)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)	at com.atlassian.security.auth.trustedapps.filter.TrustedApplicationsFilter.doFilter(TrustedApplicationsFilter.java:100)	at com.atlassian.confluence.util.AbstractBootstrapHotSwappingFilter.doFilter(AbstractBootstrapHotSwappingFilter.java:34)	at com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)