Cannot find servlet to handle resource /content/keysight/us/en/other/cia404 (500)

The requested URL /content/keysight/us/en/other/cia404.html resulted in an error in Apache Sling Core Default Servlet.

Request Progress:

      0 TIMER_START{Request Processing}
      0 COMMENT timer_end format is {<elapsed microseconds>,<timer name>} <optional message>
      3 LOG Method=GET, PathInfo=null
      4 TIMER_START{handleSecurity}
   1000 TIMER_END{995,handleSecurity} authenticator org.apache.sling.auth.core.impl.SlingAuthenticator@6f5584d1 returns true
   1192 TIMER_START{ResourceResolution}
   3066 TIMER_END{1873,ResourceResolution} URI=/content/keysight/us/en/other/cia404.html resolves to Resource=JcrNodeResource, type=cq:Page, superType=null, path=/content/keysight/us/en/other/cia404
   3069 LOG Resource Path Info: SlingRequestPathInfo: path='/content/keysight/us/en/other/cia404', selectorString='null', extension='html', suffix='null'
   3070 TIMER_START{ServletResolution}
   3072 TIMER_START{resolveServlet(/content/keysight/us/en/other/cia404)}
   3517 TIMER_END{444,resolveServlet(/content/keysight/us/en/other/cia404)} Using servlet Apache Sling Core Default Servlet
   3519 TIMER_END{449,ServletResolution} URI=/content/keysight/us/en/other/cia404.html handled by Servlet=Apache Sling Core Default Servlet
   3521 LOG Applying Requestfilters
   3525 LOG Calling filter: com.adobe.granite.resourceresolverhelper.impl.ResourceResolverHelperImpl
   3529 LOG Calling filter: org.apache.sling.security.impl.ContentDispositionFilter
   3531 LOG Calling filter: com.adobe.granite.csrf.impl.CSRFFilter
   3536 LOG Calling filter: org.apache.sling.i18n.impl.I18NFilter
   3538 LOG Calling filter: com.adobe.acs.commons.redirects.filter.RedirectFilter
   4041 LOG Calling filter: com.adobe.granite.httpcache.impl.InnerCacheFilter
   4045 LOG Calling filter: org.apache.sling.rewriter.impl.RewriterFilter
   4046 LOG Calling filter: com.day.cq.wcm.core.impl.WCMRequestFilter
   4048 LOG Calling filter: com.adobe.cq.wcm.core.components.internal.servlets.CoreFormHandlingServlet
   4050 LOG Calling filter: com.adobe.granite.optout.impl.OptOutFilter
   4054 LOG Calling filter: com.day.cq.wcm.foundation.forms.impl.FormsHandlingServlet
   4055 LOG Calling filter: com.adobe.cq.social.commons.cors.CORSAuthenticationFilter
   4058 LOG Calling filter: com.keysight.elasticsearch.filters.KeysightAEMPageRequestFilter
   4134 LOG Calling filter: org.apache.sling.engine.impl.debug.RequestProgressTrackerLogFilter
   4137 LOG Calling filter: com.adobe.cq.wcm.core.extensions.amp.internal.AmpModeForwardFilter
   4151 LOG Calling filter: org.apache.sling.dynamicinclude.CacheControlFilter
   4158 LOG Calling filter: com.keysightblog.core.filters.LoggingFilter
   4160 LOG Calling filter: com.keysight.sso.services.impl.SSOFilter
   6144 LOG Calling filter: com.day.cq.wcm.mobile.core.impl.redirect.RedirectFilter
   6147 LOG Calling filter: com.day.cq.wcm.core.impl.AuthoringUIModeServiceImpl
   6150 LOG Calling filter: com.adobe.granite.rest.assets.impl.AssetContentDispositionFilter
   6153 LOG Calling filter: com.adobe.granite.requests.logging.impl.RequestLoggerImpl
   6156 LOG Calling filter: com.adobe.granite.rest.impl.servlet.ApiResourceFilter
   6304 LOG Calling filter: com.day.cq.dam.core.impl.servlet.ActivityRecordHandler
   6313 LOG Calling filter: com.adobe.cq.social.ugcbase.security.impl.SaferSlingPostServlet
   6316 LOG Calling filter: org.apache.sling.dynamicinclude.SyntheticResourceFilter
   6320 LOG Calling filter: com.day.cq.dam.core.impl.assetlinkshare.AdhocAssetShareAuthHandler
   6324 LOG Applying Componentfilters
   6326 LOG Calling filter: com.day.cq.personalization.impl.TargetComponentFilter
   6329 LOG Calling filter: com.day.cq.wcm.core.impl.page.PageLockFilter
   6335 TIMER_START{Apache Sling Core Default Servlet#0}
   6344 LOG Applying Error filters
   6345 LOG Calling filter: org.apache.sling.i18n.impl.I18NFilter
   6346 LOG Calling filter: org.apache.sling.rewriter.impl.RewriterFilter
   6348 TIMER_START{handleError:status=500}
   6767 TIMER_END{418,handleError:status=500} Using handler Sling (Ad Hoc) Default Error Handler Servlet
   6866 LOG Ignoring found processor for post processing ProcessorConfiguration: {contentTypes=[text/html], order=1010, active=true, valid=true, processErrorResponse=true, pipeline=(generator=Config(type=htmlparser, config=JcrPropertyMap [node=Node[NodeDelegate{tree=/apps/keysight/config/rewriter/default/generator-htmlparser: { jcr:primaryType = nt:unstructured, includeTags = [A, /A, IMG, AREA, FORM, BASE, LINK, SCRIPT, BODY, /BODY]}}], values={jcr:primaryType=nt:unstructured, includeTags=[Ljava.lang.String;@76ca4830}]), transformers=(Config(type=linkrewriter, config=JcrPropertyMap [node=Node[NodeDelegate{tree=/apps/keysight/config/rewriter/default/transformer-linkrewriter: { jcr:primaryType = nt:unstructured, component-optional = false}}], values={jcr:primaryType=nt:unstructured, component-optional=false}]), Config(type=linkchecker, config={}), Config(type=linktype, config={}), Config(type=mobile, config=JcrPropertyMap [node=Node[NodeDelegate{tree=/apps/keysight/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/keysight/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/keysight/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={}))} as an error occured (org.apache.sling.api.SlingException: Unable to setup processor: Unable to get component of class 'interface org.apache.sling.rewriter.Transformer' with type 'linkchecker'.) during setup while processing another error.
   6929 LOG Ignoring 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=/libs/cq/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=/libs/cq/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=/libs/cq/config/rewriter/default/transformer-contentsync: { jcr:primaryType = nt:unstructured, component-optional = true}}], values={jcr:primaryType=nt:unstructured, component-optional=true}]), serializer=Config(type=htmlwriter, config={}))} as an error occured (org.apache.sling.api.SlingException: Unable to setup processor: Unable to get component of class 'interface org.apache.sling.rewriter.Transformer' with type 'linkchecker'.) during setup while processing another error.
   7008 TIMER_END{7007,Request Processing} Dumping SlingRequestProgressTracker Entries

Apache Sling