报错：module ‘google.protobuf.internal.containers‘ has no attribute ‘MutableMapping‘

报错位置：
from torch.utils.tensorboard import SummaryWriter

分析：
tensorboard包依赖于protobuf包，查看当前protobuf包版本：1.19.3

解决方案：
安装旧版本pip install protobuf==1.10.0，运行查看pip show protobuf：

Name: protobuf
Version: 3.10.0
Summary: Protocol Buffers
Home-page: https://developers.google.com/protocol-buffers/
Author: None
Author-email: None
License: 3-Clause BSD License
Location: d:programdataanaconda3libsite-packages
Requires: six, setuptools
Required-by: tensorboard