在运行run_autofinetune.sh脚本时，前面的步骤都能成功，但到了后面就报错。有人知道是什么问题吗？

错误信息如下：

The final best eval score is 0.0.
The final best model parameters are saved as model/my_model/best_model .
Traceback (most recent call last):
File "/root/miniconda3/envs/py37/bin/hub", line 8, in 
sys.exit(main())
File "/root/miniconda3/envs/py37/lib/python3.7/site-packages/paddlehub/commands/hub.py", line 64, in main
command.execute(argv[1:])
File "/root/miniconda3/envs/py37/lib/python3.7/site-packages/paddlehub/commands/hub.py", line 51, in execute
return command.execute(argv[1:])
File "/root/miniconda3/envs/py37/lib/python3.7/site-packages/paddlehub/commands/autofinetune.py", line 210, in execute
shutil.copytree(best_hparams_dir, best_model_dir)
File "/root/miniconda3/envs/py37/lib/python3.7/shutil.py", line 318, in copytree
names = os.listdir(src)
FileNotFoundError: [Errno 2] No such file or directory: 'model/my_model/round9/model-0/'