HTTP Status 500 - Cannot call sendError() after the response has been committed
Asked by Rich Webb:

I'm doing a new setup on CentOS 6.9 Final - used the .bin installer. Right after I associated my server ID and pasted my license into the box this message comes up and errors out. I selected the evaluation using the internal DB.

```
java.lang.IllegalStateException: Cannot call sendError() after the response has been committed	org.apache.catalina.connector.ResponseFacade.sendError(ResponseFacade.java:462)	javax.servlet.http.HttpServletResponseWrapper.sendError(HttpServletResponseWrapper.java:120)	com.atlassian.confluence.web.filter.DebugFilter$LoggingResponseWrapper.sendError(DebugFilter.java:132)	javax.servlet.http.HttpServletResponseWrapper.sendError(HttpServletResponseWrapper.java:120)	com.atlassian.confluence.servlet.FourOhFourErrorLoggingFilter$1.sendError(FourOhFourErrorLoggingFilter.java:52)	javax.servlet.http.HttpServletResponseWrapper.sendError(HttpServletResponseWrapper.java:120)	com.atlassian.core.filters.HeaderSanitisingResponseWrapper.sendError(HeaderSanitisingResponseWrapper.java:103)	javax.servlet.http.HttpServletResponseWrapper.sendError(HttpServletResponseWrapper.java:120)	javax.servlet.http.HttpServletResponseWrapper.sendError(HttpServletResponseWrapper.java:120)	com.opensymphony.webwork.dispatcher.ServletDispatcher.sendError(ServletDispatcher.java:349)	com.atlassian.confluence.servlet.ConfluenceServletDispatcher.sendError(ConfluenceServletDispatcher.java:104)	com.atlassian.confluence.servlet.ConfluenceServletDispatcher.serviceAction(ConfluenceServletDispatcher.java:97)	com.opensymphony.webwork.dispatcher.ServletDispatcher.service(ServletDispatcher.java:199)	javax.servlet.http.HttpServlet.service(HttpServlet.java:729)	com.atlassian.confluence.util.profiling.ProfilingSiteMeshFilter.doFilter(ProfilingSiteMeshFilter.java:55)	com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:64)	com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:58)	com.atlassian.confluence.jmx.JmxFilter.doFilter(JmxFilter.java:98)	com.atlassian.confluence.cache.TransactionalCacheFactoryCleanupFilter.doFilter(TransactionalCacheFactoryCleanupFilter.java:22)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)	com.atlassian.core.filters.ServletContextThreadLocalFilter.doFilter(ServletContextThreadLocalFilter.java:21)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)	com.atlassian.confluence.util.UserLoggingContextFilter.doFilter(UserLoggingContextFilter.java:32)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)	com.atlassian.confluence.util.UserNameHeaderFilter.doFilter(UserNameHeaderFilter.java:25)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)	com.atlassian.confluence.web.filter.MauEventFilter.doFilter(MauEventFilter.java:42)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)	com.atlassian.confluence.util.UserThreadLocalFilter.doFilter(UserThreadLocalFilter.java:39)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)	com.atlassian.confluence.web.filter.ConfluenceTimeoutFilter.doFilter(ConfluenceTimeoutFilter.java:57)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)	com.atlassian.seraph.filter.SecurityFilter.doFilter(SecurityFilter.java:88)	com.atlassian.confluence.web.filter.ConfluenceSecurityFilter.doFilter(ConfluenceSecurityFilter.java:25)	com.atlassian.confluence.web.filter.ThreadLocalCacheFilter.doFilter(ThreadLocalCacheFilter.java:25)	com.atlassian.confluence.util.AbstractBootstrapHotSwappingFilter$SwapOnBootstrapFilter.doFilter(AbstractBootstrapHotSwappingFilter.java:45)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)	com.atlassian.confluence.util.AbstractBootstrapHotSwappingFilter.doFilter(AbstractBootstrapHotSwappingFilter.java:35)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)	com.atlassian.seraph.filter.BaseLoginFilter.doFilter(BaseLoginFilter.java:148)	com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:64)	com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:58)	com.atlassian.confluence.util.ClusterHeaderFilter.doFilter(ClusterHeaderFilter.java:56)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)	com.atlassian.confluence.web.filter.ConfluenceOpenSessionInViewFilter.doFilterInternal(ConfluenceOpenSessionInViewFilter.java:38)	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)	com.atlassian.confluence.util.ConfluenceErrorFilter.doFilter(ConfluenceErrorFilter.java:24)	com.atlassian.util.profiling.filters.ProfilingFilter.doFilter(ProfilingFilter.java:99)	com.atlassian.confluence.core.datetime.RequestTimeThreadLocalFilter.doFilter(RequestTimeThreadLocalFilter.java:37)	com.atlassian.core.filters.cache.AbstractCachingFilter.doFilter(AbstractCachingFilter.java:33)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)	com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:64)	com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:58)	com.atlassian.confluence.tenant.TenantGateFilter.lambda$doFilter$0(TenantGateFilter.java:35)	com.atlassian.confluence.tenant.TenantGate$3.call(TenantGate.java:145)	com.atlassian.confluence.tenant.TenantGateFilter.doFilter(TenantGateFilter.java:37)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)	com.atlassian.confluence.util.MobileAppRequestFilter.doFilter(MobileAppRequestFilter.java:36)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)	com.atlassian.confluence.internal.web.filter.spring.IgnoreWebAsyncManagerFilter.doFilter(IgnoreWebAsyncManagerFilter.java:59)	com.atlassian.confluence.web.filter.validateparam.RequestParamValidationFilter.doFilter(RequestParamValidationFilter.java:51)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)	com.atlassian.confluence.web.filter.TranslationModeFilter.doFilter(TranslationModeFilter.java:39)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)	com.atlassian.confluence.plugin.servlet.filter.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:72)	com.atlassian.confluence.web.filter.LanguageExtractionFilter.doFilter(LanguageExtractionFilter.java:49)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)	com.atlassian.confluence.impl.vcache.VCacheRequestContextFilter.doFilter(VCacheRequestContextFilter.java:58)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)	com.atlassian.confluence.util.LoggingContextFilter.doFilter(LoggingContextFilter.java:33)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)	com.atlassian.confluence.util.RequestCacheThreadLocalFilter.doFilter(RequestCacheThreadLocalFilter.java:65)	com.atlassian.confluence.web.filter.ZipkinTracingFilter.doFilter(ZipkinTracingFilter.java:54)	com.atlassian.confluence.web.filter.ResponseOutputStreamFilter.doFilter(ResponseOutputStreamFilter.java:25)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)	com.atlassian.johnson.filters.AbstractJohnsonFilter.doFilter(AbstractJohnsonFilter.java:59)	com.atlassian.confluence.web.ConfluenceJohnsonFilter.doFilter(ConfluenceJohnsonFilter.java:32)	com.atlassian.core.filters.encoding.AbstractEncodingFilter.doFilter(AbstractEncodingFilter.java:41)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)	com.atlassian.confluence.impl.servlet.HoldingUntilStartedFilter.doFilter(HoldingUntilStartedFilter.java:88)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)	com.atlassian.core.filters.HeaderSanitisingFilter.doFilter(HeaderSanitisingFilter.java:44)	com.atlassian.confluence.servlet.FourOhFourErrorLoggingFilter.doFilter(FourOhFourErrorLoggingFilter.java:64)	com.atlassian.confluence.web.filter.DebugFilter.doFilter(DebugFilter.java:46)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)

This is a fresh install of CentOS as well as a clean install of Confluence.
```


Answers:
author: g
body: Can you test the issue with a new evaluation license? Are you using already used production license?

Stop confluence (or kill the process) remove or rename \<confluence-home\> directory and start Confluence.

That will trigger setup process again, this time use evaluation license and let us know how it went.

If it fails again, we would need a full log (atlassian-confluence.log) to see what and when went wrong.

Cheers!

comments: author: Rich Webb
body: That may be the issue - I think I chose eval but then put in my production license at a later point because I read somewhere that I could move my license to another server later on.

What I'm attempting to do is I want to install it for testing on my new virtual machine (fresh install) and get familiar with the product and then do a clean install on my VPS. My test box has an external MySQL database server available but I couldn't figure out how to get back to the question in the setup where it asked me eval or production. Can you help me just reset the install completely? I did do an uninstall and remove the directory it was installed in but then it seemed to have somehow remembered my selection of "eval".

Rich


author: g
body: In that case, remove the \<confluence-home\> directory and the setup process will start from scratch afther restart.

p.s. You can find the location of the \<confluence-home\> if you look into \<confluence_install\>/confluence/WEB-INF/classes/confluence-init.properties file


author: Rich Webb
body: I did finally get it up and running - I ended up using my production key though. Is there a process when I'm ready to move it to the production box to tie the license to the new server ID? Or does the server ID matter?

Rich


author: g
body: The license is not tied to the Server id - [What is server id](https://confluence.atlassian.com/confkb/what-is-the-confluence-server-id-151519275.html). But only one instance can be active with one license.

Please note that all owners of a comercial license are entitled to a [free developers license](https://confluence.atlassian.com/confkb/how-to-get-a-confluence-developer-license-152044449.html) which is perfect for testings and upgrades.