NoneType'

[wangning7149]

你好！，运行代码 出现以下错误，请问是什么原因呢？

Traceback (most recent call last): File "labelme2coco.py", line 162, in labelme2coco(labelme_json,'train.json') File "labelme2coco.py", line 34, in init self.save_json() File "labelme2coco.py", line 142, in save_json self.data_transfer() File "labelme2coco.py", line 42, in data_transfer self.images.append(self.image(data,num,file_name)) File "labelme2coco.py", line 54, in image img = img_b64_to_arr(data['imageData']) File "/home/zhixing/mmdetection-2.1.0/image.py", line 12, in img_b64_to_arr f.write(base64.b64decode(img_b64)) File "/home/zhixing/anaconda3/lib/python3.7/base64.py", line 80, in b64decode s = _bytes_from_decode_data(s) File "/home/zhixing/anaconda3/lib/python3.7/base64.py", line 46, in _bytes_from_decode_data "string, not %r" % s.class.name) from None TypeError: argument should be a bytes-like object or ASCII string, not 'NoneType'