【conda】清华源不可使用的报错

报错信息：

UnavailableInvalidChannel: The channel is not accessible or is invalid.
  channel name: anaconda/cloud/conda-forge
  channel url: https://mirrors.cloud.tencent.com/anaconda/cloud/conda-forge
  error code: 404

You will need to adjust your conda configuration to proceed.
Use `conda config --show channels` to view your configuration's current state,
and use `conda config --show-sources` to view config file locations.

 清华镜像已经不提供conda包的支持，等待恢复，现在暂时都不能使用