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updateConfig() called on a dynamic_reconfigure::Server that provides its own mutex

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when I added and load my controllers the differential driver controller i got the following error My configuration file is very simple mobile_base_controller: type: "diff_drive_controller/DiffDriveController" left_wheel: 'left_wheel_joint' right_wheel: 'right_wheel_joint' pose_covariance_diagonal: [0.001, 0.001, 1000000.0, 1000000.0, 1000000.0, 1000.0] twist_covariance_diagonal: [0.001, 0.001, 1000000.0, 1000000.0, 1000000.0, 1000.0] the error causing Dead lock :- [ WARN] [1544302051.671006910, 0.688000000]: updateConfig() called on a dynamic_reconfigure::Server that provides its own mutex. This can lead to deadlocks if updateConfig() is called during an update. Providing a mutex to the constructor is highly recommended in this case. Please forward this message to the node author. I'm using Ros Kinetic , how can i fix this problem as it cause dead look *the robot moved for short time and stop)

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