Error When Deleting Turtlebot Model in Gazebo

[ShiJbey]

ISSUE TEMPLATE ver. 0.3.0

1. Which TurtleBot3 you have?

   • [ ] Burger
   • [ ] Waffle
   • [x] Waffle Pi

2. Which ROS is working with TurtleBot3?

   • [ ] ROS 1 Kinetic Kame
   • [x] ROS 1 Melodic Morenia
   • [ ] ROS 2 Dashing Diademata
   • [ ] ROS 2 Eloquent Elusor
   • [ ] etc (PLEASE, WRITE DOWN YOUR ROS VERSION HERE)

3. Which SBC(Single Board Computer) is working on TurtleBot3?

   • [ ] Raspberry Pi 3
   • [ ] Intel Joule 570x
   • [x] Simulation

4. Which OS you installed in SBC?

   • [ ] Raspbian
   • [ ] Ubuntu MATE 16.04 or later
   • [ ] Ubuntu Server 18.04 or later
   • [x] Simulation

5. Which OS you installed in Remote PC?

   • [ ] Ubuntu 16.04 LTS (Xenial Xerus)
   • [x] Ubuntu 18.04 LTS (Bionic Beaver)
   • [ ] Linux Mint 18.x
   • [ ] Linux Mint 19.x
   • [ ] etc (PLEASE, WRITE DOWN YOUR OS)

6. Write down software version and firmware version

   • Software version: melodic-devel
   • Firmware version: N/A

7. Write down the commands you used in order

   • roslaunch turtlebot3_gazebo turtlebot3_empty_world.launch
   • (in second terminal) rosservice call gazebo/delete_model '{model_name: turtlebot3_waffle_pi}'

8. Copy and Paste your error message on terminal

terminate called after throwing an instance of 'boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<boost::lock_error> >'
  what():  boost: mutex lock failed in pthread_mutex_lock: Invalid argument
Aborted (core dumped)

9. Please, describe detailedly what difficulty you are in

   I would like to spawn and remove Turtlebot models in Gazebo for a distributed simulation. However, when trying to delete a model using the Gazebo service, I get the error given above.

[ROBOTIS-Will]

@ShiJbey Thanks for reporting. We'll take a look at the issue and get back to you. Thank you.

[ROBOTIS-Will]

This doesn't seem to be an issue of TurtleBot3, but the Gazebo. Please feel free to reopen this when necessary.