自己的数据集。 在数据加载的时候。出现这个问题‘NoneType' object has no attribute 'find'’。 验证集和测试集加载不了

[MARUIHAN123]

np_resource = np.dtype([("resource", np.ubyte, 1)])
0.17.2
Parsing annotation files
imgsets_path_trainval /home/multiai4/Ruihan/data/FaceMaskDataset/VOC2007/ImageSets/Main/train.txt
imgsets_path_test /home/multiai4/Ruihan/data/FaceMaskDataset/VOC2007/ImageSets/Main/val.txt
'NoneType' object has no attribute 'find'
'NoneType' object has no attribute 'find'
'NoneType' object has no attribute 'find'
'NoneType' object has no attribute 'find'
'NoneType' object has no attribute 'find'
'NoneType' object has no attribute 'find'
'NoneType' object has no attribute 'find'
'NoneType' object has no attribute 'find'
'NoneType' object has no attribute 'find'
'NoneType' object has no attribute 'find'
'NoneType' object has no attribute 'find'
'NoneType' object has no attribute 'find'
'NoneType' object has no attribute 'find'
'NoneType' object has no attribute 'find'
'NoneType' object has no attribute 'find'
'NoneType' object has no attribute 'find'
'NoneType' object has no attribute 'find'
'NoneType' object has no attribute 'find'
'NoneType' object has no attribute 'find'
'NoneType' object has no attribute 'find'