Deepstream example cashed

Description

A test on Deepstream 5.1 on Jetpack 4.4.1 after new installation.
Try to run
desktop:/opt/nvidia/deepstream/deepstream-5.1$ deepstream-app -c samples/configs/deepstream-app/source4_1080p_dec_infer-resnet_tracker_sgie_tiled_display_int8.txt

and got the error:

An exception occurred. An exception occurred. /dvs/git/dirty/git-master_linux/multimedia/deep-learning/VisionWorksAPI/1.5/headers/NVX/nvx_opencv_interop.hpp:296: error: (-215) vxGetStatus((vx_reference)img) == VX_SUCCESS in function createVXImageFromCVMat

/dvs/git/dirty/git-master_linux/multimedia/deep-learning/VisionWorksAPI/1.5/headers/NVX/nvx_opencv_interop.hpp:296: error: (-215) vxGetStatus((vx_reference)img) == VX_SUCCESS in function createVXImageFromCVMat

Quitting

What is the cause?
I was wondering if I should install DS 4.0 instead but I could not find the downloading link to DS4.0.

Environment

TensorRT Version: 7.1.3
GPU Type:
Nvidia Driver Version:
CUDA Version: 10.2.89
CUDNN Version: 8.0.0
Operating System + Version:Ubuntu 18.04
Python Version (if applicable): 4.5.0 complied with CUDA: YES
TensorFlow Version (if applicable):
PyTorch Version (if applicable):
Baremetal or Container (if container which image + tag):

Steps To Reproduce

Follow this link: https://docs.nvidia.com/metropolis/deepstream/dev-guide/text/DS_Quickstart.html

Hi @xianmei.lei,

We recommend you to post your query on Deep stream forum to get better help.

Thank you.