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org.apache.solr.servlet.ZookeeperInfoServlet
javax.servlet.UnavailableException: org.apache.solr.servlet.ZookeeperInfoServlet	at org.eclipse.jetty.servlet.BaseHolder.doStart(BaseHolder.java:102)	at org.eclipse.jetty.servlet.ServletHolder.doStart(ServletHolder.java:338)	at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)	at org.eclipse.jetty.servlet.ServletHandler.initialize(ServletHandler.java:870)	at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:298)	at org.eclipse.jetty.webapp.WebAppContext.startWebapp(WebAppContext.java:1349)	at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1342)	at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:741)	at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:505)	at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)	at org.eclipse.jetty.deploy.bindings.StandardStarter.processBinding(StandardStarter.java:41)	at org.eclipse.jetty.deploy.AppLifeCycle.runBindings(AppLifeCycle.java:186)	at org.eclipse.jetty.deploy.DeploymentManager.requestAppGoal(DeploymentManager.java:498)	at org.eclipse.jetty.deploy.DeploymentManager.addApp(DeploymentManager.java:146)	at org.eclipse.jetty.deploy.providers.ScanningAppProvider.fileAdded(ScanningAppProvider.java:180)	at org.eclipse.jetty.deploy.providers.WebAppProvider.fileAdded(WebAppProvider.java:461)	at org.eclipse.jetty.deploy.providers.ScanningAppProvider$1.fileAdded(ScanningAppProvider.java:64)	at org.eclipse.jetty.util.Scanner.reportAddition(Scanner.java:609)	at org.eclipse.jetty.util.Scanner.reportDifferences(Scanner.java:528)	at org.eclipse.jetty.util.Scanner.scan(Scanner.java:391)	at org.eclipse.jetty.util.Scanner.doStart(Scanner.java:313)	at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)	at org.eclipse.jetty.deploy.providers.ScanningAppProvider.doStart(ScanningAppProvider.java:150)	at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)	at org.eclipse.jetty.deploy.DeploymentManager.startAppProvider(DeploymentManager.java:560)	at org.eclipse.jetty.deploy.DeploymentManager.doStart(DeploymentManager.java:235)	at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)	at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:132)	at org.eclipse.jetty.server.Server.start(Server.java:387)	at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:114)	at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:61)	at org.eclipse.jetty.server.Server.doStart(Server.java:354)	at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)	at org.eclipse.jetty.xml.XmlConfiguration$1.run(XmlConfiguration.java:1255)	at java.security.AccessController.doPrivileged(Native Method)	at org.eclipse.jetty.xml.XmlConfiguration.main(XmlConfiguration.java:1174)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:606)	at org.eclipse.jetty.start.Main.invokeMain(Main.java:321)	at org.eclipse.jetty.start.Main.start(Main.java:817)	at org.eclipse.jetty.start.Main.main(Main.java:112)