Exception has occurred: UnpicklingError Weights only load failed.

[shaojun]

exceptioned in code line:

import numpy as np
from ultralytics import YOLO
import cv2

import util
from util import get_car, read_license_plate, write_csv
license_plate_detector = YOLO('/home/shao/Automatic-License-Plate-Recognition-using-YOLOv8/license_plate_detector.pt')

exception detail:

Exception has occurred: UnpicklingError
Weights only load failed. This file can still be loaded, to do so you have two options, �[1mdo those steps only if you trust the source of the checkpoint�[0m. 
	(1) In PyTorch 2.6, we changed the default value of the `weights_only` argument in `torch.load` from `False` to `True`. Re-running `torch.load` with `weights_only` set to `False` will likely succeed,

i have installed the requirements.txt and checked the version as below:

pip list | grep ultra
ultralytics              8.0.114

[AreebaShehbaz]

Downgrade PyTorch and NumPy to compatible versions. The following combination works well:

pip install torch==2.4.1 torchvision==0.19.1 torchaudio==2.4.1 numpy==1.26.4 --index-url https://download.pytorch.org/whl/cpu --extra-index-url https://pypi.org/simple

After downgrading, reload your environment and the model should work:
license_plate_detector = YOLO('license_plate_detector.pt')