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java.lang.IllegalStateException: closed	at okhttp3.internal.ws.RealWebSocket.sendMessage(RealWebSocket.java:107)	at io.socket.engineio.client.transports.WebSocket$4.call(WebSocket.java:189)	at io.socket.engineio.parser.Parser.encodePacket(Parser.java:63)	at io.socket.engineio.parser.Parser.encodePacket(Parser.java:42)	at io.socket.engineio.client.transports.WebSocket.write(WebSocket.java:184)	at io.socket.engineio.client.Transport$3.run(Transport.java:108)	at io.socket.thread.EventThread.exec(EventThread.java:55)	at io.socket.engineio.client.Transport.send(Transport.java:103)	at io.socket.engineio.client.Socket.flush(Socket.java:615)	at io.socket.engineio.client.Socket.onDrain(Socket.java:606)	at io.socket.engineio.client.Socket.access$1100(Socket.java:31)	at io.socket.engineio.client.Socket$6.call(Socket.java:308)	at io.socket.emitter.Emitter.emit(Emitter.java:117)