HTTP Status 500 - java.lang.Exception: javax.servlet.ServletException: net.sf.ehcache.constructs.web.filter.FilterNonReentrantException: The request thread is attempting to reenter filter net.sf.ehcache.constructs.web.filter.SimpleCachingHeadersPageCachingFilter. URL: https://www.centralpark.newham.sch.uk/assets/files/hand-washingtoptips.pdf/NotFound.action

type Exception report

message java.lang.Exception: javax.servlet.ServletException: net.sf.ehcache.constructs.web.filter.FilterNonReentrantException: The request thread is attempting to reenter filter net.sf.ehcache.constructs.web.filter.SimpleCachingHeadersPageCachingFilter. URL: https://www.centralpark.newham.sch.uk/assets/files/hand-washingtoptips.pdf/NotFound.action

description The server encountered an internal error that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: java.lang.Exception: javax.servlet.ServletException: net.sf.ehcache.constructs.web.filter.FilterNonReentrantException: The request thread is attempting to reenter filter net.sf.ehcache.constructs.web.filter.SimpleCachingHeadersPageCachingFilter. URL: https://www.centralpark.newham.sch.uk/assets/files/hand-washingtoptips.pdf/NotFound.action
	net.sf.ehcache.constructs.web.filter.Filter.logThrowable(Filter.java:143)
	net.sf.ehcache.constructs.web.filter.Filter.doFilter(Filter.java:91)

root cause

java.lang.Exception: javax.servlet.ServletException: net.sf.ehcache.constructs.web.filter.FilterNonReentrantException: The request thread is attempting to reenter filter net.sf.ehcache.constructs.web.filter.SimpleCachingHeadersPageCachingFilter. URL: https://www.centralpark.newham.sch.uk/assets/files/hand-washingtoptips.pdf/NotFound.action
	net.sf.ehcache.constructs.web.filter.CachingFilter.buildPageInfo(CachingFilter.java:268)
	net.sf.ehcache.constructs.web.filter.CachingFilter.doFilter(CachingFilter.java:216)
	net.sf.ehcache.constructs.web.filter.Filter.doFilter(Filter.java:86)

root cause

javax.servlet.ServletException: net.sf.ehcache.constructs.web.filter.FilterNonReentrantException: The request thread is attempting to reenter filter net.sf.ehcache.constructs.web.filter.SimpleCachingHeadersPageCachingFilter. URL: https://www.centralpark.newham.sch.uk/assets/files/hand-washingtoptips.pdf/NotFound.action
	net.sf.ehcache.constructs.web.filter.Filter.logThrowable(Filter.java:143)
	net.sf.ehcache.constructs.web.filter.Filter.doFilter(Filter.java:91)
	com.dbplc.primary.webapp.processor.ForwardingRequestProcessor.process(ForwardingRequestProcessor.java:45)
	com.dbplc.primary.webapp.PreprocessorFilter.doFilter(PreprocessorFilter.java:95)
	com.dbplc.primary.webapp.VirtualHostFilter.doFilter(VirtualHostFilter.java:63)
	net.sf.ehcache.constructs.web.filter.CachingFilter.buildPage(CachingFilter.java:302)
	net.sf.ehcache.constructs.web.filter.SimpleCachingHeadersPageCachingFilter.buildPage(SimpleCachingHeadersPageCachingFilter.java:120)
	net.sf.ehcache.constructs.web.filter.CachingFilter.buildPageInfo(CachingFilter.java:247)
	net.sf.ehcache.constructs.web.filter.CachingFilter.doFilter(CachingFilter.java:216)
	net.sf.ehcache.constructs.web.filter.Filter.doFilter(Filter.java:86)

root cause

net.sf.ehcache.constructs.web.filter.FilterNonReentrantException: The request thread is attempting to reenter filter net.sf.ehcache.constructs.web.filter.SimpleCachingHeadersPageCachingFilter. URL: https://www.centralpark.newham.sch.uk/assets/files/hand-washingtoptips.pdf/NotFound.action
	net.sf.ehcache.constructs.web.filter.CachingFilter.checkNoReentry(CachingFilter.java:537)
	net.sf.ehcache.constructs.web.filter.CachingFilter.buildPageInfo(CachingFilter.java:241)
	net.sf.ehcache.constructs.web.filter.CachingFilter.doFilter(CachingFilter.java:216)
	net.sf.ehcache.constructs.web.filter.Filter.doFilter(Filter.java:86)
	com.dbplc.primary.webapp.processor.ForwardingRequestProcessor.process(ForwardingRequestProcessor.java:45)
	com.dbplc.primary.webapp.PreprocessorFilter.doFilter(PreprocessorFilter.java:95)
	com.dbplc.primary.webapp.VirtualHostFilter.doFilter(VirtualHostFilter.java:63)
	net.sf.ehcache.constructs.web.filter.CachingFilter.buildPage(CachingFilter.java:302)
	net.sf.ehcache.constructs.web.filter.SimpleCachingHeadersPageCachingFilter.buildPage(SimpleCachingHeadersPageCachingFilter.java:120)
	net.sf.ehcache.constructs.web.filter.CachingFilter.buildPageInfo(CachingFilter.java:247)
	net.sf.ehcache.constructs.web.filter.CachingFilter.doFilter(CachingFilter.java:216)
	net.sf.ehcache.constructs.web.filter.Filter.doFilter(Filter.java:86)

note The full stack trace of the root cause is available in the Apache Tomcat/7.0.68 (Ubuntu) logs.

Apache Tomcat/7.0.68 (Ubuntu)