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websocket error
java.net.UnknownHostException: console.gridgain.com	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)	at java.lang.reflect.Constructor.newInstance(Constructor.java:422)	at sun.net.www.protocol.http.HttpURLConnection$10.run(HttpURLConnection.java:1890)	at sun.net.www.protocol.http.HttpURLConnection$10.run(HttpURLConnection.java:1885)	at java.security.AccessController.doPrivileged(Native Method)	at sun.net.www.protocol.http.HttpURLConnection.getChainedException(HttpURLConnection.java:1884)	at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1457)	at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1441)	at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:480)	at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:338)	at io.socket.engineio.client.transports.PollingXHR$Request$1.run(PollingXHR.java:214)	at java.lang.Thread.run(Thread.java:745)