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java.lang.IllegalStateException: No protocol factory for default protocol: null at org.eclipse.jetty.server.AbstractConnector.doStart(AbstractConnector.java:258) at org.eclipse.jetty.server.AbstractNetworkConnector.doStart(AbstractNetworkConnector.java:81) at org.eclipse.jetty.server.ServerConnector.doStart(ServerConnector.java:235) at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68) at org.eclipse.jetty.server.Server.doStart(Server.java:390) at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68) at org.eclipse.jetty.xml.XmlConfiguration$1.run(XmlConfiguration.java:1516) at java.security.AccessController.doPrivileged(Native Method) at org.eclipse.jetty.xml.XmlConfiguration.main(XmlConfiguration.java:1441)