Exception in thread Thread-1: Traceback (most recent call last): File "/opt/conda/envs/python35-paddle120-env/lib/python3.7/threading.py", line 926, in _bootstrap_inner self.run() File "/opt/conda/envs/python35-paddle120-env/lib/python3.7/threading.py", line 870, in run self._target(*self._args, **self._kwargs) File "/opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/paddle/fluid/dataloader/dataloader_iter.py", line 213, in _thread_loop self._thread_done_event) File "/opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/paddle/fluid/dataloader/fetcher.py", line 121, in fetch data.append(self.dataset[idx]) File "PMRID_train_dehaze_230215.py", line 76, in __getitem__ haze=Image.open(path) File "/opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/PIL/Image.py", line 2912, in open fp = builtins.open(filename, "rb") IsADirectoryError: [Errno 21] Is a directory: '/home/aistudio/hazy/.ipynb_checkpoints'

这段错误信息显示了在一个名为Thread-1的线程中发生了异常，异常的类型是IsADirectoryError，错误信息为"[Errno 21] Is a directory: '/home/aistudio/hazy/.ipynb_checkpoints'"。具体来说，是在一个名为"/opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/paddle/fluid/dataloader/fetcher.py"的文件的第121行代码中，调用了一个名为PMRID_train_dehaze_230215.py的文件中的__getitem__方法（即索引操作），并且在其中调用了PIL库中的Image.open方法打开一个文件，但是这个文件的路径指向的实际上是一个文件夹（目录），而不是一个文件，因此引发了异常。