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multi_dof_joint_trajectory_rviz_plugins crash on traj received #25

@tiralonghipol

Description

@tiralonghipol

Ubuntu20, ROS noetic

I am trying to use the multi_dof_joint_trajectory_rviz_plugins plugin but the moment I publish even a simple trajectory_msgs::MultiDOFJointTrajectory Rviz crashes.

The message is: [rviz-1] process has died [pid 822625, exit code -11,

this is the test trajectory

`
header:
seq: 0
stamp:
secs: 6052
nsecs: 824000000
frame_id: ''
joint_names: []
points:

transforms: 
  - 
    translation: 
      x: 0.0
      y: 0.0
      z: 1.0
    rotation: 
      x: 0.0
      y: 0.0
      z: 0.0
      w: 1.0
velocities: 
  - 
    linear: 
      x: 0.0
      y: 0.0
      z: 0.0
    angular: 
      x: 0.0
      y: 0.0
      z: 0.0
accelerations: 
  - 
    linear: 
      x: 0.0
      y: 0.0
      z: 0.0
    angular: 
      x: 0.0
      y: 0.0
      z: 0.0
time_from_start: 
  secs: 0
  nsecs:         0

Any idea?

`
UPDATE:

with some debug I figure out that this is the breaking point
if I comment lines 131 - 135, it works fine
can it be related to some boot version? also the history property does not seem to work

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