qemu: uncaught target signal 11 (Segmentation fault) - core dumped

[ViviaY]

all tests passed successfully, but when I run the python examples, like WAMFactorGraphExample.py, it appeared
“ calculating signed distance field ...
calculating signed distance field done
qemu: uncaught target signal 11 (Segmentation fault) - core dumped
Segmentation fault”

I also debugged the code, and I found it fails on "plotRobotModel(figure0, axis0, arm, start_conf)" and "body_points = robot.sphereCentersMat(conf)", could you please tell me the reason? and how to fix it?

Thanks a lot!!