VisionWorks 1.6 samples "Cannot open source "

ubuntu@tegra-ubuntu:~/VisionWorks-1.6-Samples/bin/aarch64/linux/release$ ./nvx_sample_opengl_interop
VisionWorks library info:
VisionWorks version : 1.6.0
OpenVX Standard version : 1.1.0

Error: Cannot open source /home/ubuntu/VisionWorks-1.6-Samples/bin/…/data/cars.mp4

I did not modify the code, just recompile, and then all the samples can not run

sorry, it’s my mistake

I wrote the environment variable
export DISPLAY=0.0

The correct one should be
export DISPLAY=:0.0