Resource at '/content/errors/404.html' not found: No resource found (404)

The requested URL /content/errors/404.html resulted in an error in Sling (Ad Hoc) Default Error Handler Servlet.

Request Progress:

      0 TIMER_START{Request Processing}
      0 COMMENT timer_end format is {<elapsed microseconds>,<timer name>} <optional message>
      2 LOG Method=GET, PathInfo=null
      3 TIMER_START{handleSecurity}
   1203 TIMER_END{1199,handleSecurity} authenticator org.apache.sling.auth.core.impl.SlingAuthenticator@3e40e4e3 returns true
   1508 TIMER_START{ResourceResolution}
   2574 TIMER_END{1065,ResourceResolution} URI=/content/errors/404.html resolves to Resource=NonExistingResource, path=/content/errors/404.html
   2579 LOG Resource Path Info: SlingRequestPathInfo: path='/content/errors/404.html', selectorString='null', extension='html', suffix='null'
   2579 TIMER_START{ServletResolution}
   2582 TIMER_START{resolveServlet(/content/errors/404.html)}
   3194 LOG {0}: no servlet found
   3198 TIMER_END{615,resolveServlet(/content/errors/404.html)} Using servlet org.apache.sling.servlets.get.DefaultGetServlet
   3201 TIMER_END{621,ServletResolution} URI=/content/errors/404.html handled by Servlet=org.apache.sling.servlets.get.DefaultGetServlet
   3202 LOG Applying Requestfilters
   3206 LOG Calling filter: com.adobe.granite.resourceresolverhelper.impl.ResourceResolverHelperImpl
   3210 LOG Calling filter: org.apache.sling.security.impl.ContentDispositionFilter
   3213 LOG Calling filter: com.adobe.granite.csrf.impl.CSRFFilter
   3217 LOG Calling filter: org.apache.sling.i18n.impl.I18NFilter
   3221 LOG Calling filter: com.adobe.granite.httpcache.impl.InnerCacheFilter
   3225 LOG Calling filter: org.apache.sling.rewriter.impl.RewriterFilter
   3227 LOG Calling filter: com.day.cq.wcm.core.impl.WCMRequestFilter
   3230 LOG Calling filter: com.adobe.fd.core.security.internal.CurrentUserServiceImpl
   3638 LOG Calling filter: com.adobe.cq.wcm.core.components.internal.servlets.CoreFormHandlingServlet
   3641 LOG Calling filter: com.adobe.granite.optout.impl.OptOutFilter
   3644 LOG Calling filter: com.day.cq.wcm.foundation.forms.impl.FormsHandlingServlet
   3646 LOG Calling filter: com.adobe.cq.social.commons.cors.CORSAuthenticationFilter
   3649 LOG Calling filter: com.adobe.livecycle.dsc.clientsdk.internal.ResourceResolverHolderFilter
   3651 LOG Calling filter: org.apache.sling.engine.impl.debug.RequestProgressTrackerLogFilter
   3653 LOG Calling filter: com.adobe.livecycle.content.appcontext.impl.AppContextFilter
   3659 LOG Calling filter: com.adobe.cq.wcm.core.extensions.amp.internal.AmpModeForwardFilter
   3689 LOG Calling filter: wtc.core.filters.LoggingFilter
   3691 LOG Calling filter: org.panynj.jfk.core.filters.LoggingFilter
   3692 LOG Calling filter: com.day.cq.wcm.mobile.core.impl.redirect.RedirectFilter
   3695 LOG Calling filter: com.day.cq.wcm.core.impl.AuthoringUIModeServiceImpl
   3697 LOG Calling filter: com.adobe.granite.rest.assets.impl.AssetContentDispositionFilter
   3700 LOG Calling filter: com.adobe.granite.requests.logging.impl.RequestLoggerImpl
   3703 LOG Calling filter: com.adobe.granite.rest.impl.servlet.ApiResourceFilter
   3707 LOG Calling filter: com.day.cq.dam.core.impl.servlet.ActivityRecordHandler
   3713 LOG Calling filter: com.day.cq.dam.core.impl.assetlinkshare.AdhocAssetShareAuthHandler
   3715 LOG Calling filter: com.adobe.cq.social.ugcbase.security.impl.SaferSlingPostServlet
   3721 LOG Applying Componentfilters
   3722 LOG Calling filter: com.day.cq.personalization.impl.TargetComponentFilter
   3725 LOG Calling filter: com.day.cq.wcm.core.impl.page.PageLockFilter
   3728 LOG Calling filter: com.day.cq.wcm.core.impl.WCMComponentFilter
   3741 LOG Calling filter: com.day.cq.wcm.core.impl.WCMDebugFilter
   3747 TIMER_START{org.apache.sling.servlets.get.DefaultGetServlet#0}
   3880 TIMER_END{132,org.apache.sling.servlets.get.DefaultGetServlet#0}
   3921 LOG Filter timing: filter=com.day.cq.wcm.core.impl.WCMDebugFilter, inner=142, total=147, outer=5
   3927 LOG Filter timing: filter=com.day.cq.wcm.core.impl.WCMComponentFilter, inner=147, total=166, outer=19
   3932 LOG Filter timing: filter=com.day.cq.wcm.core.impl.page.PageLockFilter, inner=166, total=171, outer=5
   4019 LOG Filter timing: filter=com.adobe.cq.dtm.reactor.impl.servlets.ClientLibraryFilter, inner=0, total=215, outer=215
   4024 LOG Filter timing: filter=com.adobe.cq.dam.webdav.impl.io.DamWebdavRequestFilter, inner=215, total=216, outer=1
   4512 LOG Filter timing: filter=com.adobe.cq.social.ugcbase.security.impl.SaferSlingPostServlet, inner=216, total=221, outer=5
   4518 LOG Filter timing: filter=com.day.cq.dam.core.impl.assetlinkshare.AdhocAssetShareAuthHandler, inner=221, total=226, outer=5
   4524 LOG Filter timing: filter=com.adobe.cq.dtm.impl.servlets.DTMLibraryCompatibilityFilter, inner=226, total=227, outer=1
   4530 LOG Filter timing: filter=com.day.cq.dam.core.impl.servlet.DamContentDispositionFilter, inner=227, total=228, outer=1
   4536 LOG Filter timing: filter=com.day.cq.dam.core.impl.servlet.ActivityRecordHandler, inner=228, total=236, outer=8
   4541 LOG Filter timing: filter=com.adobe.granite.rest.impl.servlet.ApiResourceFilter, inner=236, total=242, outer=6
   4547 LOG Filter timing: filter=com.adobe.granite.requests.logging.impl.RequestLoggerImpl, inner=242, total=265, outer=23
   4552 LOG Filter timing: filter=com.adobe.granite.rest.assets.impl.AssetContentDispositionFilter, inner=265, total=271, outer=6
   4557 LOG Filter timing: filter=com.day.cq.wcm.core.impl.AuthoringUIModeServiceImpl, inner=271, total=276, outer=5
   4563 LOG Filter timing: filter=com.day.cq.wcm.mobile.core.impl.redirect.RedirectFilter, inner=276, total=280, outer=4
   4568 LOG Filter timing: filter=org.panynj.jfk.core.filters.LoggingFilter, inner=280, total=283, outer=3
   4574 LOG Filter timing: filter=wtc.core.filters.LoggingFilter, inner=283, total=287, outer=4
   4579 LOG Filter timing: filter=com.adobe.cq.wcm.core.extensions.amp.internal.AmpModeForwardFilter, inner=287, total=323, outer=36
   4585 LOG Filter timing: filter=com.adobe.livecycle.content.appcontext.impl.AppContextFilter, inner=323, total=328, outer=5
   4590 LOG Filter timing: filter=org.apache.sling.engine.impl.debug.RequestProgressTrackerLogFilter, inner=328, total=332, outer=4
   4595 LOG Filter timing: filter=com.adobe.livecycle.dsc.clientsdk.internal.ResourceResolverHolderFilter, inner=332, total=337, outer=5
   4600 LOG Filter timing: filter=com.adobe.cq.social.commons.cors.CORSAuthenticationFilter, inner=337, total=341, outer=4
   4659 LOG Filter timing: filter=com.day.cq.wcm.foundation.forms.impl.FormsHandlingServlet, inner=341, total=345, outer=4
   4665 LOG Filter timing: filter=com.adobe.granite.optout.impl.OptOutFilter, inner=345, total=351, outer=6
   4670 LOG Filter timing: filter=com.adobe.cq.wcm.core.components.internal.servlets.CoreFormHandlingServlet, inner=351, total=358, outer=7
   4676 LOG Filter timing: filter=com.adobe.fd.core.security.internal.CurrentUserServiceImpl, inner=358, total=766, outer=408
   4681 LOG Filter timing: filter=com.day.cq.wcm.core.impl.WCMRequestFilter, inner=766, total=771, outer=5
   4687 LOG Filter timing: filter=org.apache.sling.rewriter.impl.RewriterFilter, inner=771, total=776, outer=5
   4692 LOG Filter timing: filter=com.adobe.granite.httpcache.impl.InnerCacheFilter, inner=776, total=783, outer=7
   4697 LOG Filter timing: filter=org.apache.sling.i18n.impl.I18NFilter, inner=783, total=787, outer=4
   4703 LOG Filter timing: filter=com.adobe.granite.csrf.impl.CSRFFilter, inner=787, total=794, outer=7
   4708 LOG Filter timing: filter=org.apache.sling.security.impl.ContentDispositionFilter, inner=794, total=799, outer=5
   4714 LOG Filter timing: filter=org.apache.sling.distribution.servlet.DistributionAgentCreationFilter, inner=799, total=800, outer=1
   4845 LOG Applying Error filters
   4849 LOG Calling filter: org.apache.sling.i18n.impl.I18NFilter
   4851 LOG Calling filter: org.apache.sling.rewriter.impl.RewriterFilter
   4855 TIMER_START{handleError:status=404}
   5213 TIMER_END{357,handleError:status=404} Using handler Sling (Ad Hoc) Default Error Handler Servlet
   6096 LOG Found processor for post processing ProcessorConfiguration: {contentTypes=[text/html], order=1, active=true, valid=true, processErrorResponse=true, pipeline=(generator=Config(type=htmlparser, config={}), transformers=(Config(type=linkchecker, config={}), Config(type=mobile, config=JcrPropertyMap [node=Node[NodeDelegate{tree=/apps/portauthority/config/rewriter/default/transformer-mobile: { jcr:primaryType = nt:unstructured, component-optional = true}}], values={jcr:primaryType=nt:unstructured, component-optional=true}]), Config(type=mobiledebug, config=JcrPropertyMap [node=Node[NodeDelegate{tree=/apps/portauthority/config/rewriter/default/transformer-mobiledebug: { jcr:primaryType = nt:unstructured, component-optional = true}}], values={jcr:primaryType=nt:unstructured, component-optional=true}]), Config(type=contentsync, config=JcrPropertyMap [node=Node[NodeDelegate{tree=/apps/portauthority/config/rewriter/default/transformer-contentsync: { jcr:primaryType = nt:unstructured, component-optional = true}}], values={jcr:primaryType=nt:unstructured, component-optional=true}]), Config(type=versioned-clientlibs, config={}), serializer=Config(type=htmlwriter, config={}))}
   6228 TIMER_END{6227,Request Processing} Dumping SlingRequestProgressTracker Entries

Apache Sling