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java.lang.NullPointerException: null	at org.jclouds.blobstore.config.LocalBlobStore.maybeQuoteETag(LocalBlobStore.java:938)	at org.jclouds.blobstore.config.LocalBlobStore.copyBlob(LocalBlobStore.java:540)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at com.google.inject.internal.DelegatingInvocationHandler.invoke(DelegatingInvocationHandler.java:37)	at com.sun.proxy.$Proxy39.copyBlob(Unknown Source)	at org.gaul.s3proxy.S3ProxyHandler.handleCopyBlob(S3ProxyHandler.java:1548)	at org.gaul.s3proxy.S3ProxyHandler.doHandle(S3ProxyHandler.java:583)	at org.gaul.s3proxy.S3ProxyHandler.handle(S3ProxyHandler.java:255)	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)	at org.eclipse.jetty.server.Server.handle(Server.java:499)	at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:311)	at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)	at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:544)	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)	at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)	at java.lang.Thread.run(Thread.java:745)