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Solutions on the web fcntl failed: EAGAIN (Try again)	at Method)	at	at java.nio.FileChannelImpl.basicLock(	at java.nio.FileChannelImpl.tryLock(	at java.nio.channels.FileChannel.tryLock(	at	at de.schildbach.wallet.service.BlockchainServiceImpl.onCreate(	at	at$1800(	at$H.handleMessage(	at android.os.Handler.dispatchMessage(	at android.os.Looper.loop(	at	at java.lang.reflect.Method.invokeNative(Native Method)	at java.lang.reflect.Method.invoke(	at$	at	at dalvik.system.NativeStart.main(Native Method)