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okhttp3.internal.Util >at okhttp3.OkHttpClient.<clinit>(OkHttpClient.java:65) >at okhttp3.OkHttpClient$Builder.<init>(OkHttpClient.java:381)> at>io.socket.engineio.client.transports.WebSocket.doOpen(WebSocket.java:51)
java.lang.NoClassDefFoundError: okhttp3.internal.Util
>at okhttp3.OkHttpClient.<clinit>(OkHttpClient.java:65)
>at okhttp3.OkHttpClient$Builder.<init>(OkHttpClient.java:381)>
at>io.socket.engineio.client.transports.WebSocket.doOpen(WebSocket.java:51)	at io.socket.engineio.client.Transport$1.run(Transport.java:75)	at io.socket.thread.EventThread.exec(EventThread.java:50)	at io.socket.engineio.client.Transport.open(Transport.java:70)	at io.socket.engineio.client.Socket.probe(Socket.java:458)	at io.socket.engineio.client.Socket.onOpen(Socket.java:471)	at io.socket.engineio.client.Socket.onHandshake(Socket.java:512)	at io.socket.engineio.client.Socket.onPacket(Socket.java:485)	at io.socket.engineio.client.Socket.access$900(Socket.java:30)	at io.socket.engineio.client.Socket$5.call(Socket.java:299)	at io.socket.emitter.Emitter.emit(Emitter.java:117)	at io.socket.engineio.client.Transport.onPacket(Transport.java:127)