when i use the franka panda move_to_start.launch some error,ubuntu18.04 melodic libfranka0.6.0
the error is :
RRTConnect: Motion planning start tree could not be initialized!
the logfile is :
[rospy.client][INFO] 2020-07-23 08:48:35,058: init_node, name[/move_to_start], pid[30659]
[xmlrpc][INFO] 2020-07-23 08:48:35,059: XML-RPC server binding to 0.0.0.0:0
[xmlrpc][INFO] 2020-07-23 08:48:35,060: Started XML-RPC server [http://dell:35825/]
[rospy.init][INFO] 2020-07-23 08:48:35,060: ROS Slave URI: [http://dell:35825/]
[rospy.impl.masterslave][INFO] 2020-07-23 08:48:35,060: _ready: http://dell:35825/
[xmlrpc][INFO] 2020-07-23 08:48:35,062: xml rpc node: starting XML-RPC server
[rospy.registration][INFO] 2020-07-23 08:48:35,062: Registering with master node http://localhost:11311
[rospy.init][INFO] 2020-07-23 08:48:35,161: registered with master
[rospy.rosout][INFO] 2020-07-23 08:48:35,161: initializing /rosout core topic
[rospy.rosout][INFO] 2020-07-23 08:48:35,165: connected to core topic /rosout
[rospy.simtime][INFO] 2020-07-23 08:48:35,166: /use_sim_time is not set, will not subscribe to simulated time [/clock] topic
[rospy.internal][INFO] 2020-07-23 08:48:35,178: topic[/move_group/status] adding connection to [http://dell:35999/], count 0
[rospy.internal][INFO] 2020-07-23 08:48:35,183: topic impl's ref count is zero, deleting topic /move_group/status...
[rospy.internal][INFO] 2020-07-23 08:48:35,183: topic[/move_group/status] removing connection to http://dell:35999/
[rospy.core][INFO] 2020-07-23 08:48:36,400: signal_shutdown [atexit]
[rospy.impl.masterslave][INFO] 2020-07-23 08:48:36,403: atexit
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