训练和评估分类模型的时候报以下错误，请问是什么原因呢？

[CachCheng]

Traceback (most recent call last): File "/meta/cash/llm/InternImage/classification/main.py", line 661, in main(config) File "/meta/cash/llm/InternImage/classification/main.py", line 275, in main acc1, acc5, loss = validate(config, data_loader_val, model) File "/home/ahs/anaconda3/envs/llm/lib/python3.9/site-packages/torch/utils/_contextlib.py", line 115, in decorate_context return func(*args, **kwargs) File "/meta/cash/llm/InternImage/classification/main.py", line 531, in validate for idx, (images, target) in enumerate(data_loader): File "/home/ahs/anaconda3/envs/llm/lib/python3.9/site-packages/torch/utils/data/dataloader.py", line 633, in next data = self._next_data() File "/home/ahs/anaconda3/envs/llm/lib/python3.9/site-packages/torch/utils/data/dataloader.py", line 1345, in _next_data return self._process_data(data) File "/home/ahs/anaconda3/envs/llm/lib/python3.9/site-packages/torch/utils/data/dataloader.py", line 1371, in _process_data data.reraise() File "/home/ahs/anaconda3/envs/llm/lib/python3.9/site-packages/torch/_utils.py", line 644, in reraise raise exception RuntimeError: Caught RuntimeError in DataLoader worker process 0. Original Traceback (most recent call last): File "/home/ahs/anaconda3/envs/llm/lib/python3.9/site-packages/torch/utils/data/_utils/worker.py", line 308, in _worker_loop data = fetcher.fetch(index) File "/home/ahs/anaconda3/envs/llm/lib/python3.9/site-packages/torch/utils/data/_utils/fetch.py", line 51, in fetch data = [self.dataset[idx] for idx in possibly_batched_index] File "/home/ahs/anaconda3/envs/llm/lib/python3.9/site-packages/torch/utils/data/_utils/fetch.py", line 51, in data = [self.dataset[idx] for idx in possibly_batched_index] File "/meta/cash/llm/InternImage/classification/dataset/cached_image_folder.py", line 323, in getitem img = self.transform(img) File "/home/ahs/anaconda3/envs/llm/lib/python3.9/site-packages/torchvision/transforms/transforms.py", line 95, in call img = t(img) File "/home/ahs/anaconda3/envs/llm/lib/python3.9/site-packages/torchvision/transforms/transforms.py", line 137, in call return F.to_tensor(pic) File "/home/ahs/anaconda3/envs/llm/lib/python3.9/site-packages/torchvision/transforms/functional.py", line 166, in to_tensor img = torch.from_numpy(np.array(pic, mode_to_nptype.get(pic.mode, np.uint8), copy=True)) RuntimeError: Numpy is not available