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java.lang.IllegalArgumentException: URI can't be null. at sun.net.spi.DefaultProxySelector.select(DefaultProxySelector.java:116) at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:906) at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:836) at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(HttpURLConnection.java:1014) at com.diablominer.DiabloMiner.NetworkState.JSONRPCNetworkState.doJSONRPCCall(JSONRPCNetworkState.java:108) at com.diablominer.DiabloMiner.NetworkState.JSONRPCNetworkState.doGetWorkMessage(JSONRPCNetworkState.java:329) at com.diablominer.DiabloMiner.NetworkState.JSONRPCNetworkState$GetWorkAsync.run(JSONRPCNetworkState.java:427) at java.lang.Thread.run(Thread.java:680)