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[INFO] [1600340685.043020]: ROS Serial Python Node
[INFO] [1600340685.047880]: Connecting to /dev/ttyACM0 at 57600 baud
[INFO] [1600340687.152757]: Requesting topics...
[INFO] [1600340687.173950]: Note: publish buffer size is 512 bytes
[ERROR] [1600340687.175228]: Creation of service server failed: need more than 1 value to unpack
[INFO] [1600340687.192597]: Note: subscribe buffer size is 512 bytes
[INFO] [1600340687.194203]: Setup subscriber on /joints_to_aurdino [std_msgs/Float64]
[ERROR] [1600340687.202371]: Creation of service server failed: need more than 1 value to unpack

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