使用paddledetection训练picodet时偶尔会报下面的错误 请问是咋回事呀？coco格式数据集

Traceback (most recent call last):
File "/opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/paddle/fluid/dataloader/dataloader_iter.py", line 583, in _get_data
data = self._data_queue.get(timeout=self._timeout)
File "/opt/conda/envs/python35-paddle120-env/lib/python3.7/multiprocessing/queues.py", line 105, in get
raise Empty
_queue.Empty

During handling of the above exception, another exception occurred:

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 505, in _thread_loop
batch = self._get_data()
File "/opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/paddle/fluid/dataloader/dataloader_iter.py", line 599, in _get_data
"pids: {}".format(len(failed_workers), pids))
RuntimeError: DataLoader 2 workers exit unexpectedly, pids: 47760, 47761