YOLOv8 奇怪的错误（TypeError: expected str, bytes or os.PathLike object, not NoneType）

Question

from ultralytics import YOLO

model = YOLO('yolov8s-cls.pt')

model.train(data='C:/Users/bod9d/Desktop/ai_reloaded/sq', epochs=1, imgsz=64)

所以这是我的代码。我

m learning 

YOLOv8

 so epoch=1 to check everything is fine, But I got an error that I totally don

不懂。顺便说一句，数据集路径是绝对正确的。

---

Traceback (most recent call last):
  File "C:\Users\bod9d\Desktop\ai_reloaded\main.py", line 5, in <module>
    model.train(data='C:/Users/bod9d/Desktop/ai_reloaded/sq', epochs=1, imgsz=64)
  File "C:\Users\bod9d\AppData\Local\Programs\Python\Python310\lib\site-packages\ultralytics\yolo\engine\model.py", line 370, in train
    self.trainer.train()
  File "C:\Users\bod9d\AppData\Local\Programs\Python\Python310\lib\site-packages\ultralytics\yolo\engine\trainer.py", line 191, in train
    self._do_train(world_size)
  File "C:\Users\bod9d\AppData\Local\Programs\Python\Python310\lib\site-packages\ultralytics\yolo\engine\trainer.py", line 268, in _do_train
    self._setup_train(world_size)
  File "C:\Users\bod9d\AppData\Local\Programs\Python\Python310\lib\site-packages\ultralytics\yolo\engine\trainer.py", line 252, in _setup_train
    self.test_loader = self.get_dataloader(self.testset, batch_size=batch_size * 2, rank=-1, mode='val')
  File "C:\Users\bod9d\AppData\Local\Programs\Python\Python310\lib\site-packages\ultralytics\yolo\v8\classify\train.py", line 76, in get_dataloader
    loader = build_classification_dataloader(path=dataset_path,
  File "C:\Users\bod9d\AppData\Local\Programs\Python\Python310\lib\site-packages\ultralytics\yolo\data\build.py", line 125, in build_classification_dataloader
    dataset = ClassificationDataset(root=path, imgsz=imgsz, augment=augment, cache=cache)
  File "C:\Users\bod9d\AppData\Local\Programs\Python\Python310\lib\site-packages\ultralytics\yolo\data\dataset.py", line 242, in __init__
    super().__init__(root=root)
  File "C:\Users\bod9d\AppData\Local\Programs\Python\Python310\lib\site-packages\torchvision\datasets\folder.py", line 309, in __init__
    super().__init__(
  File "C:\Users\bod9d\AppData\Local\Programs\Python\Python310\lib\site-packages\torchvision\datasets\folder.py", line 145, in __init__
    samples = self.make_dataset(self.root, class_to_idx, extensions, is_valid_file)
  File "C:\Users\bod9d\AppData\Local\Programs\Python\Python310\lib\site-packages\torchvision\datasets\folder.py", line 189, in make_dataset
    return make_dataset(directory, class_to_idx, extensions=extensions, is_valid_file=is_valid_file)
  File "C:\Users\bod9d\AppData\Local\Programs\Python\Python310\lib\site-packages\torchvision\datasets\folder.py", line 61, in make_dataset
    directory = os.path.expanduser(directory)
  File "C:\Users\bod9d\AppData\Local\Programs\Python\Python310\lib\ntpath.py", line 319, in expanduser
    path = os.fspath(path)
TypeError: expected str, bytes or os.PathLike object, not NoneType

我什至不知道这意味着什么。数据集的路径存在并且完全正确，所以我不知道该怎么做。

我尝试使用其他数据集路径并重新安装

ultralytics

，但它无济于事。我的意思是代码很好，所以有什么问题？