segment fault(core dumped)

[Wangxinhui-bot]

Hi:
When I run with

python3 laikgo,py

I got error:segment fault(core dumped)
The full error is :

pybullet build time: Jul  8 2020 18:23:32
argv[0]=--opengl2
startThreads creating 1 threads.
starting thread 0
started thread 0 
argc=3
argv[0] = --unused
argv[1] = --opengl2
argv[2] = --start_demo_name=Physics Server
ExampleBrowserThreadFunc started
X11 functions dynamically loaded using dlopen/dlsym OK!
X11 functions dynamically loaded using dlopen/dlsym OK!
4

	visual 0x21 selected
GL_VENDOR=VMware, Inc.
GL_RENDERER=SVGA3D; build: RELEASE;  LLVM;
GL_VERSION=2.1 Mesa 20.0.8
GL_SHADING_LANGUAGE_VERSION=1.20
pthread_getconcurrency()=0
b3Printf: Selected demo: Physics Server
startThreads creating 1 threads.
starting thread 0
started thread 0 
MotionThreadFunc thread started
segment fault(core dumped)

looking for your help.