we are getting HTTP 500 error after testing connection to database
Asked by Susan Hess:

testing connection to database worked fine, received the below messages after a few minutes during initial setup of database. Have setup Confluence per the documentation, have setup PostgreSQL 9.6 database per the documentation (Granter Owner, Granted Login, Granted Create Database, etc. etc.). Enabled firewall port 5432, on and on.

HTTP Status 500 -- Internal Server Error {#toc-hId--1409937312}
---------------------------------------------------------------

*** ** * ** ***

**Type** Exception Report

**Message** Cannot call sendError() after the response has been committed

**Description** The server encountered an unexpected condition that prevented it from fulfilling the request.

**Exception**

```
java.lang.IllegalStateException: Cannot call sendError() after the response has been committed	org.apache.catalina.connector.ResponseFacade.sendError(ResponseFacade.java:456)	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:89)	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:741)	com.atlassian.confluence.util.profiling.ProfilingSiteMeshFilter.doFilter(ProfilingSiteMeshFilter.java:55)	com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:51)	com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:45)	com.atlassian.johnson.plugin.servlet.filter.JohnsonServletFilterModuleContainerFilter.doFilter(JohnsonServletFilterModuleContainerFilter.java:50)	com.atlassian.confluence.jmx.JmxFilter.doFilter(JmxFilter.java:97)	com.atlassian.confluence.cache.TransactionalCacheFactoryCleanupFilter.doFilter(TransactionalCacheFactoryCleanupFilter.java:22)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.core.filters.ServletContextThreadLocalFilter.doFilter(ServletContextThreadLocalFilter.java:17)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.util.UserLoggingContextFilter.doFilter(UserLoggingContextFilter.java:32)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.util.UserNameHeaderFilter.doFilter(UserNameHeaderFilter.java:25)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.web.filter.MauEventFilter.doFilterInternal(MauEventFilter.java:34)	com.atlassian.confluence.web.filter.AbstractStaticResourceAwareFilter.doFilter(AbstractStaticResourceAwareFilter.java:43)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.util.UserThreadLocalFilter.doFilter(UserThreadLocalFilter.java:39)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.web.filter.ConfluenceTimeoutFilter.doFilter(ConfluenceTimeoutFilter.java:57)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.seraph.filter.SecurityFilter.doFilter(SecurityFilter.java:88)	com.atlassian.confluence.web.filter.ConfluenceSecurityFilter.applyFilter(ConfluenceSecurityFilter.java:40)	com.atlassian.confluence.web.filter.ConfluenceSecurityFilter.doFilter(ConfluenceSecurityFilter.java:29)	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:32)	com.atlassian.confluence.util.AbstractBootstrapHotSwappingFilter.doFilter(AbstractBootstrapHotSwappingFilter.java:35)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.seraph.filter.BaseLoginFilter.doFilter(BaseLoginFilter.java:148)	com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:51)	com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:45)	com.atlassian.johnson.plugin.servlet.filter.JohnsonServletFilterModuleContainerFilter.doFilter(JohnsonServletFilterModuleContainerFilter.java:50)	com.atlassian.confluence.util.ClusterHeaderFilter.doFilter(ClusterHeaderFilter.java:56)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	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:31)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:51)	com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:45)	com.atlassian.johnson.plugin.servlet.filter.JohnsonServletFilterModuleContainerFilter.doFilter(JohnsonServletFilterModuleContainerFilter.java:50)	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:32)	com.atlassian.confluence.util.MobileAppRequestFilter.doFilter(MobileAppRequestFilter.java:36)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	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:32)	com.atlassian.confluence.web.filter.TranslationModeFilter.doFilter(TranslationModeFilter.java:39)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.plugin.servlet.filter.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:71)	com.atlassian.confluence.web.filter.LanguageExtractionFilter.doFilter(LanguageExtractionFilter.java:39)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.impl.vcache.VCacheRequestContextFilter.doFilter(VCacheRequestContextFilter.java:58)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.util.LoggingContextFilter.doFilter(LoggingContextFilter.java:33)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.util.RequestCacheThreadLocalFilter.doFilter(RequestCacheThreadLocalFilter.java:59)	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:32)	com.atlassian.johnson.filters.AbstractJohnsonFilter.doFilter(AbstractJohnsonFilter.java:59)	com.atlassian.confluence.web.ConfluenceJohnsonFilter.doFilter(ConfluenceJohnsonFilter.java:32)	com.atlassian.confluence.setup.ConfluenceEncodingFilter.doFilterInternal(ConfluenceEncodingFilter.java:35)	com.atlassian.confluence.web.filter.AbstractStaticResourceAwareFilter.doFilter(AbstractStaticResourceAwareFilter.java:43)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.core.filters.HeaderSanitisingFilter.doFilter(HeaderSanitisingFilter.java:37)	com.atlassian.confluence.servlet.FourOhFourErrorLoggingFilter.doFilter(FourOhFourErrorLoggingFilter.java:64)	com.atlassian.confluence.internal.diagnostics.HttpRequestMonitoringFilter.doFilter(HttpRequestMonitoringFilter.java:35)	com.atlassian.confluence.web.filter.DebugFilter.doFilter(DebugFilter.java:46)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)
```


Answers:
author: Stephen Sifers
body: Hello Susan and welcome to the Community!

Thanks for coming to Community for your error within Confluence. From the output of the error you've included, the issue looks to be similar to the following Community post: [HTTP Status 500 - Cannot call sendError() after the response has been committed](https://community.atlassian.com/t5/Confluence-questions/HTTP-Status-500-Cannot-call-sendError-after-the-response-has/qaq-p/732073). This post has an accepted answer with references on what was done to resolve the issue.

Could you please review the linked post above and see if those steps are able to help resolve your issue?

Regards,  
Stephen Sifers


Tags: confluence-server

server