constraint generator process has died in topological navigation [closed]

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I am running move_base_topo_stage.launch in topological_roadmap package on ROS Diamondback. The following error occurred and this process has died.

file = /home/taichi/desired-topo-nav-location/graph_mapping/laser_slam/src/scan_match_constraints.cpp
line = 496
cond = closest

[constraint_generator-6] process has died [pid 30649, exit code -5]. log files: /home/taichi/.ros/log/e2c1e2a2-d72e-11e2-bd5c-6480995eee9c/constraint_generator-6*.log

What is cause of this error? What could be solution? Thank you.