项目地址：https://aistudio.baidu.com/aistudio/projectdetail/1925037?forkThirdPart=1

执行下面代码时报错：

%cd ~/PaddleClas

!python tools/train.py \
-c configs/VisionTransformer/ViT_small_patch16_224.yaml

报错信息：

File "/home/aistudio/PaddleClas/ppcls/modeling/architectures/mobilenet_v3.py", line 24, in
from paddle.nn.functional.activation import hard_sigmoid, hard_swish
ImportError: cannot import name 'hard_sigmoid' from 'paddle.nn.functional.activation' (/opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/paddle/nn/functional/activation.py)