[gazebo-6] process has died [pid 9305, exit code 134..

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Hi. I'm simulating a turtlebot3 with a mounted vlp16 (velodyne lidar) and using LOAM package for the mapping.

All is working, but at some (apparently) random point Gazebo (version 7) crashes, while the Ros node still working. Any ideas? why?

The exact error is:

**gzserver: /build/gazebo-nhSAPd/gazebo-7.0.0+dfsg/gazebo/sensors/SensorManager.cc:545: void gazebo::sensors::SensorManager::SensorContainer::RunLoop(): Assertion `(diffTime.sec < 1)&&("Took over 1.0 seconds to update a sensor.")' failed.
Aborted (core dumped)**

[gazebo-6] process has died [pid 9305, exit code 134, cmd /opt/ros/kinetic/lib/gazebo_ros/gzserver -e ode /home/pol/ars_ws/src/turtlebot3/turtlebot3_gazebo/worlds/box.world __name:=gazebo __log:=/home/pol/.ros/log/7c0c118e-c5f1-11e7-ac97-d4bed98eab61/gazebo-6.log].
log file: /home/pol/.ros/log/7c0c118e-c5f1-11e7-ac97-d4bed98eab61/gazebo-6*.log