https://community.cloudera.com/t5/Support-Questions/Jetty-Server-Failed-to-start-web-server/m-p/175627#M137884 <P>I'm trying to restart my NiFi instance however I keep getting the error message "org.apache.nifi.web.server.JettyServer Failed to start web server... shutting down."</P><P>Stack Trace on the exception:</P><P style="margin-left: 20px;">2017-12-20 11:42:22,568 WARN [main] org.apache.nifi.web.server.JettyServer Failed to start web server... shutting down. java.lang.Exception: Timeout scanning annotations at org.eclipse.jetty.annotations.AnnotationConfiguration.scanForAnnotations(AnnotationConfiguration.java:496) at org.eclipse.jetty.annotations.AnnotationConfiguration.configure(AnnotationConfiguration.java:365) at org.eclipse.jetty.webapp.WebAppContext.configure(WebAppContext.java:512) at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1437) at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:799) at org.eclipse.jetty.servlet.ServletContextHandler.doStart(ServletContextHandler.java:261) at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:540) at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68) at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:131) at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:113) at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:113) at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68) at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:131) at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:105) at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:113) at org.eclipse.jetty.server.handler.gzip.GzipHandler.doStart(GzipHandler.java:290) at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68) at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:131) at org.eclipse.jetty.server.Server.start(Server.java:452) at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:105) at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:113) at org.eclipse.jetty.server.Server.doStart(Server.java:419) at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68) at org.apache.nifi.web.server.JettyServer.start(JettyServer.java:708) at org.apache.nifi.NiFi.&lt;init&gt;(NiFi.java:160) at org.apache.nifi.NiFi.main(NiFi.java:268)</P><P style="margin-left: 20px;"></P><P>What should I be looking at to address this problem?</P> Thu, 21 Dec 2017 04:02:53 GMT ttangelder 2017-12-21T04:02:53Z