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getting this error on launching turtle_tf_demo.launch file, turtle sim window opens but only one of the turtle is moving

File "/opt/ros/melodic/lib/turtletf2/turtletf2listener.py", line 50, in spawner(4, 2, 0, turtlename) File "/opt/ros/melodic/lib/python2.7/dist-packages/rospy/impl/tcprosservice.py", line 442, in _call return self.call(args, *kwds) File "/opt/ros/melodic/lib/python2.7/dist-packages/rospy/impl/tcprosservice.py", line 532, in call raise ServiceException("transport error completing service call: %s"%(str(e))) rospy.service.ServiceException: transport error completing service call: receiveonce[/spawn]: DeserializationError cannot deserialize: unknown error handler name 'rosmsg' [turtlepointer-6] process has died [pid 16062, exit code 1, cmd /opt/ros/melodic/lib/turtletf2/turtletf2listener.py _name:=turtlepointer _log:=/home/aditya/.ros/log/6cee5f8a-75f3-11eb-b0d7-080027f71a12/turtlepointer-6.log]. log file: /home/aditya/.ros/log/6cee5f8a-75f3-11eb-b0d7-080027f71a12/turtle_pointer-6*.log

Asked by aditya raj on 2021-02-26 09:28:39 UTC

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