FLIR PTU restart error

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When starting the reset of the motors using:

rostopic pub /ptu/reset std_msgs/Bool "data: true"

The reset works fine, however after completion I'm getting the error:

[ptu/ptu_driver-3] restarting process
process[ptu/ptu_driver-3]: started with pid [4940]
[ERROR] [1576688744.691015717]: Error getting pan-tilt pos
terminate called after throwing an instance of 'boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<boost::bad_lexical_cast> >'
  what():  bad lexical cast: source type value could not be interpreted as target
[ptu/ptu_driver-3] process has died [pid 4940, exit code -6, cmd /home/amree_lab_smt209/catkin_ws/devel/lib/flir_ptu_driver/ptu_node state:=/joint_states __name:=ptu_driver __log:=/home/amree_lab_smt209/.ros/log/393532d0-21b8-11ea-89ea-94de80e2e911/ptu-ptu_driver-3.log].
log file: /home/amree_lab_smt209/.ros/log/393532d0-21b8-11ea-89ea-94de80e2e911/ptu-ptu_driver-3*.log
[ptu/ptu_driver-3] restarting process

causing the reset to restart repetitively