Mesh Saving problem

[JiaruiWang-Jill]

Hi, I met with problem in using rosservice call /voxblox_node/generate_mesh "{}" to save mesh. Here is lunch file.
try .launch.txt

The terminal running rosservice call /voxblox_node/generate_mesh "{}" shows that ERROR: transport error completing service call: unable to receive data from sender, check sender's logs for details

The terminal running roslaunch voxblox_ros try.launch shows [voxblox_node-2] process has died [pid 3938, exit code -11, cmd /home/best_jill_forever/catkin_ws/devel/lib/voxblox_ros/tsdf_server -alsologtostderr pointcloud:=/camera/depth_registered/points transform:=/orb_slam_2_ros_node/transform_cam __name:=voxblox_node __log:=/home/best_jill_forever/.ros/log/d4b40912-b1a6-11e8-bfd3-a402b9214b48/voxblox_node-2.log]. log file: /home/best_jill_forever/.ros/log/d4b40912-b1a6-11e8-bfd3-a402b9214b48/voxblox_node-2*.log

And the log file shows that

Log file created at: 2018/09/06 15:31:45
Running on machine: love-mua
Log line format: [IWEF]mmdd hh:mm:ss.uuuuuu threadid file:line] msg
W0906 15:31:45.825906 3938 mesh_layer.h:56] Returning null ptr to mesh!

What could be the problem?

[ZacharyTaylor]

It seems like one of the mesh blocks was not allocated. I am not sure how that could happen though without a bug somewhere in our setup.
I created a branch that will check for this condition https://github.com/ethz-asl/voxblox/tree/fix/nullcheck, could you try switching to it and see if it works, even if it doesn't fix the problem it will give us more debug.

Also just checking, is there a chance that your computer had run out of free ram when the error occurred?

[JiaruiWang-Jill]

I fail to find out the reason but after I re-install voxblox, everything is well now.
Thank you!