Unable to access a single Confluence page

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Symptoms

  • All users were unable to access a specific Confluence page
  • The result is the same regardless the different browser used to access the page

The following appears in the atlassian-confluence.log:

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$1.sendError(FourOhFourErrorLoggingFilter.java:53)
	at javax.servlet.http.HttpServletResponseWrapper.sendError(HttpServletResponseWrapper.java:108)
	at com.atlassian.core.filters.HeaderSanitisingResponseWrapper.sendError(HeaderSanitisingResponseWrapper.java:103)
	at javax.servlet.http.HttpServletResponseWrapper.sendError(HttpServletResponseWrapper.java:108)
	at javax.servlet.http.HttpServletResponseWrapper.sendError(HttpServletResponseWrapper.java:108)
	at com.atlassian.confluence.web.filter.DebugFilter$LoggingResponseWrapper.sendError(DebugFilter.java:122)
	at javax.servlet.http.HttpServletResponseWrapper.sendError(HttpServletResponseWrapper.java:108)
	at com.atlassian.oauth.serviceprovider.internal.servlet.OAuthFilter$OAuthWWWAuthenticateAddingResponse.sendError(OAuthFilter.java:169)
	at javax.servlet.http.HttpServletResponseWrapper.sendError(HttpServletResponseWrapper.java:108)
	at com.opensymphony.module.sitemesh.filter.PageResponseWrapper.sendError(PageResponseWrapper.java:177)
	at javax.servlet.http.HttpServletResponseWrapper.sendError(HttpServletResponseWrapper.java:108)
	at javax.servlet.http.HttpServletResponseWrapper.sendError(HttpServletResponseWrapper.java:108)
	at com.atlassian.confluence.web.filter.DebugFilter$LoggingResponseWrapper.sendError(DebugFilter.java:122)
	at javax.servlet.http.HttpServletResponseWrapper.sendError(HttpServletResponseWrapper.java:108)
	at com.atlassian.confluence.web.filter.DebugFilter$LoggingResponseWrapper.sendError(DebugFilter.j

Diagnosis

  1. Try to bypass proxy and access Confluence directly via localhost/IP and check if the same issue is encountered. If so, move on to #2
  2. Temporarily enable Plugin Safe Mode and check if it makes any difference. This will disabled all user-installed plugins at once. So if the issue does not occur again, it is caused by one of the third-party plugins installed. In order to isolate which plugin is the culprit, you may need to enable the plugin one-by-one till you observed the issue arise again. This may need to be done during non-peak hours as disabling third-party plugins would cause users unable to perform some operations provided by those plugins. Once the test has been carried out, disable this mode.

Cause

This issue is caused by CustomWare Redirection Plugin. The links got re-directed to another path causing Confluence unable to access/open the specific page.

Workaround

In the browser link, change redirect=false and you will be able to successfully access/open the page.

Resolution

Disable this third-party plugin and consult the plugin's author for further assistance at: https://greenhouse.customware.net/jira/browse/REDIR

Last modified on Mar 30, 2016

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