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java.lang.IllegalStateException: Already connected at java.net.URLConnection.checkNotConnected(URLConnection.java:464) at java.net.URLConnection.setUseCaches(URLConnection.java:946) at com.android.okhttp.internal.http.HttpsURLConnectionImpl.setUseCaches(HttpsURLConnectionImpl.java:298) at com.android.volley.toolbox.HurlStack.openConnection(HurlStack.java:191) at com.android.volley.toolbox.HurlStack.performRequest(HurlStack.java:103) at com.android.volley.toolbox.BasicNetwork.performRequest(BasicNetwork.java:96) at com.android.volley.NetworkDispatcher.run(NetworkDispatcher.java:112)