ImportError: numpy.core.multiarray failed to import in Jetson environment

[Aki-zel]

I encountered an ImportError when running the demo script on my Jetson environment. The error message is as follows:

-> loaded checkpoint log/checkpoint-rs.tar (epoch: 18)
Traceback (most recent call last):
File "demo.py", line 124, in
demo(data_dir)
File "demo.py", line 120, in demo
vis_grasps(gg, cloud)
File "demo.py", line 108, in vis_grasps
gg.nms()
File "/home/ydfo/.local/lib/python3.8/site-packages/graspnetAPI/grasp.py", line 554, in nms
from grasp_nms import nms_grasp
File "grasp_nms.pyx", line 1, in init grasp_nms
ImportError: numpy.core.multiarray failed to import (auto-generated because you didn't call 'numpy.import_array()' after cimporting numpy; use 'numpy._import_array' to disable if you are certain you don't need it).
Environment:

Operating System: Ubuntu (Jetson)
Python Version: 3.8
NumPy Version: [1.20.3]
Jetson Model: [Jetson origin Nano]