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I am running in Super Dev Mode in Eclipse Oxygen. When it starts up I see the exception shown below. I have no idea what is causing it and how to fix it. Prior to upgrading to Oxygen I was running Kepler and did not have this issue.

Any help would be greatly appreciated!

Starting Jetty on port 8888
   [WARN] FAILED org.eclipse.jetty.security.ConstraintSecurityHandler@1dda65c: java.lang.ArrayStoreException: org.eclipse.jetty.security.SecurityHandler$1
java.lang.ArrayStoreException: org.eclipse.jetty.security.SecurityHandler$1
    at org.eclipse.jetty.util.LazyList.addToArray(LazyList.java:455)
    at org.eclipse.jetty.server.handler.ContextHandler.addEventListener(ContextHandler.java:599)
    at org.eclipse.jetty.security.SecurityHandler.doStart(SecurityHandler.java:300)
    at org.eclipse.jetty.security.ConstraintSecurityHandler.doStart(ConstraintSecurityHandler.java:453)
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
    at org.eclipse.jetty.server.handler.HandlerWrapper.doStart(HandlerWrapper.java:95)
    at org.eclipse.jetty.server.handler.ScopedHandler.doStart(ScopedHandler.java:115)
    at org.eclipse.jetty.server.session.SessionHandler.doStart(SessionHandler.java:124)
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
    at org.eclipse.jetty.server.handler.HandlerWrapper.doStart(HandlerWrapper.java:95)
    at org.eclipse.jetty.server.handler.ScopedHandler.doStart(ScopedHandler.java:115)
    at org.eclipse.jetty.server.handler.ContextHandler.startContext(ContextHandler.java:763)
    at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:249)
    at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1242)
    at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:717)
    at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:494)
    at com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload.doStart(JettyLauncher.java:541)
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
    at org.eclipse.jetty.server.handler.HandlerWrapper.doStart(HandlerWrapper.java:95)
    at org.eclipse.jetty.server.handler.RequestLogHandler.doStart(RequestLogHandler.java:162)
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
    at org.eclipse.jetty.server.handler.HandlerWrapper.doStart(HandlerWrapper.java:95)
    at org.eclipse.jetty.server.Server.doStart(Server.java:282)
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
    at com.google.gwt.dev.shell.jetty.JettyLauncher.start(JettyLauncher.java:740)
    at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:632)
    at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1054)
    at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:836)
    at com.google.gwt.dev.DevMode.main(DevMode.java:413)
Joakim Erdfelt
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khow
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    Is that the entire Console output? – nitind Jun 06 '18 at 16:34
  • Re _"I was running Kepler and did not have this issue"_, actually you did have this same issue, and you reported it on SO two years ago! See [GWT 2.7 exception when launching in dev mode from ec](https://stackoverflow.com/questions/35873226/gwt-2-7-exception-when-launching-in-dev-mode-from-ec?utm_medium=organic&utm_source=google_rich_qa&utm_campaign=google_rich_qa). What was your solution last time? – skomisa Jun 08 '18 at 04:05
  • Your correct skomisa. I did have the issue but I cannot recall what steps I took at that time. It's frustrating to go through the same issue each time! I could still use help! – khow Jul 24 '18 at 15:34

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