java.lang.IllegalStateException: UT000002: The response has already been started
	at io.undertow.server.HttpServerExchange.setStatusCode(HttpServerExchange.java:1374) ~[undertow-core-1.4.11.Final.jar!/:1.4.11.Final]
	at io.undertow.servlet.spec.AsyncContextImpl.handleError(AsyncContextImpl.java:405) ~[undertow-servlet-1.4.11.Final.jar!/:1.4.11.Final]
	at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:306) ~[undertow-servlet-1.4.11.Final.jar!/:1.4.11.Final]
	at io.undertow.servlet.handlers.ServletInitialHandler.access$100(ServletInitialHandler.java:81) ~[undertow-servlet-1.4.11.Final.jar!/:1.4.11.Final]
	at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:138) ~[undertow-servlet-1.4.11.Final.jar!/:1.4.11.Final]
	at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:135) ~[undertow-servlet-1.4.11.Final.jar!/:1.4.11.Final]
	at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:48) ~[undertow-servlet-1.4.11.Final.jar!/:1.4.11.Final]
	at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43) ~[undertow-servlet-1.4.11.Final.jar!/:1.4.11.Final]
	at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:272) ~[undertow-servlet-1.4.11.Final.jar!/:1.4.11.Final]
	at io.undertow.servlet.handlers.ServletInitialHandler.dispatchToPath(ServletInitialHandler.java:209) ~[undertow-servlet-1.4.11.Final.jar!/:1.4.11.Final]
	at io.undertow.servlet.spec.AsyncContextImpl$2$1.handleRequest(AsyncContextImpl.java:189) ~[undertow-servlet-1.4.11.Final.jar!/:1.4.11.Final]
	at io.undertow.server.Connectors.executeRootHandler(Connectors.java:211) ~[undertow-core-1.4.11.Final.jar!/:1.4.11.Final]
	at io.undertow.servlet.spec.AsyncContextImpl$2.run(AsyncContextImpl.java:186) ~[undertow-servlet-1.4.11.Final.jar!/:1.4.11.Final]
	at io.undertow.servlet.spec.AsyncContextImpl$6.run(AsyncContextImpl.java:456) ~[undertow-servlet-1.4.11.Final.jar!/:1.4.11.Final]
	at io.undertow.servlet.spec.AsyncContextImpl$TaskDispatchRunnable.run(AsyncContextImpl.java:567) ~[undertow-servlet-1.4.11.Final.jar!/:1.4.11.Final]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) ~[na:1.8.0_121]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_121]
	at java.lang.Thread.run(Thread.java:745) [na:1.8.0_121]

java.io.IOException: Broken pipe