Help！2d IOU error

[sumenpuyuan]

in https://github.com/cedricxie/second_ros/blob/master/src/second_ros/second/second/core/non_max_suppression/nms_gpu.py I test the following code

if __name__ == "__main__":
    import numpy as np
    box1 = np.array([[0,0,20,20,-0.1]])
    box2 = np.array([[0,0,20,20,-0.1]])
    print(rotate_iou_gpu(box1, box2))

Obviously it should print 1,but terminal shows Is this something I'm using or is there something wrong with the code itself?I look forward to receiving your reply