bug report： ValueError: zero-size array to reduction operation maximum which has no identity

[JNUpython]

deivce=cpu or gpu raise same exception

python3 ocr_japanease.py ../data/test/1.jpg Traceback (most recent call last): File "/home/demo/pythonProjects/STISR/OCR_Japanease/ocr_japanease.py", line 157, in main() File "/home/demo/pythonProjects/STISR/OCR_Japanease/ocr_japanease.py", line 34, in main ocr_result = get_ocr(d, dpi=args.dpi, use_cuda=(not args.cpu), output_detect_img=args.output_detect_img, low_gpu_memory=args.low_gpu_memory) File "/home/demo/pythonProjects/STISR/OCR_Japanease/ocr_japanease.py", line 87, in get_ocr d = dt.detect_image(model, im, dpi) File "/home/demo/pythonProjects/STISR/OCR_Japanease/misc/detection.py", line 358, in detect_image all_map = self._get_map(class_map) File "/home/demo/pythonProjects/STISR/OCR_Japanease/misc/detection.py", line 114, in _get_map for i in range(1,int(np.max(clz_map)+1)): File "/usr/local/lib/python3.10/dist-packages/numpy/core/fromnumeric.py", line 2810, in max return _wrapreduction(a, np.maximum, 'max', axis, None, out, File "/usr/local/lib/python3.10/dist-packages/numpy/core/fromnumeric.py", line 88, in _wrapreduction return ufunc.reduce(obj, axis, dtype, out, **passkwargs) ValueError: zero-size array to reduction operation maximum which has no identity