您好，我更换为清华镜像源后创建还是失败，失败信息如下：Solving environment: failed

PackagesNotFoundError: The following packages are not available from current channels:

- python=3.8

Current channels:

- https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge/linux-64

- https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge/noarch

- https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main/linux-64

- https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main/noarch

- https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/linux-64

- https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/noarch

- http://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/linux-64

- http://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/noarch

- http://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge/linux-64

- http://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge/noarch

- http://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/msys2/linux-64

- http://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/msys2/noarch

- http://mirrors.bfsu.edu.cn/anaconda/cloud/conda-forge/linux-64

- http://mirrors.bfsu.edu.cn/anaconda/cloud/conda-forge/noarch

- htts://mirrors.bfsu.edu.cn/anaconda/cloud/conda-forgeconda/linux-64

- htts://mirrors.bfsu.edu.cn/anaconda/cloud/conda-forgeconda/noarch

- http://mirrors.bfsu.edu.cn/anaconda/cloud/pytorch/linux-64

- http://mirrors.bfsu.edu.cn/anaconda/cloud/pytorch/noarch

- http://mirrors.bfsu.edu.cn/anaconda/pkgs/main/linux-64

- http://mirrors.bfsu.edu.cn/anaconda/pkgs/main/noarch

- http://mirrors.bfsu.edu.cn/anaconda/pkgs/free/linux-64

- http://mirrors.bfsu.edu.cn/anaconda/pkgs/free/noarch

- http://mirrors.ustc.edu.cn/anaconda/pkgs/main/linux-64

- http://mirrors.ustc.edu.cn/anaconda/pkgs/main/noarch

- http://mirrors.ustc.edu.cn/anaconda/pkgs/free/linux-64

- http://mirrors.ustc.edu.cn/anaconda/pkgs/free/noarch

- http://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/pro/linux-64

- http://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/pro/noarch

- http://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/r/linux-64

- http://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/r/noarch

- http://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main/linux-64

- http://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main/noarch

- https://repo.anaconda.com/pkgs/main/linux-64

- https://repo.anaconda.com/pkgs/main/noarch

- https://repo.anaconda.com/pkgs/free/linux-64

- https://repo.anaconda.com/pkgs/free/noarch

- https://repo.anaconda.com/pkgs/r/linux-64

- https://repo.anaconda.com/pkgs/r/noarch

- https://repo.anaconda.com/pkgs/pro/linux-64

- https://repo.anaconda.com/pkgs/pro/noarch

To search for alternate channels that may provide the conda package you're

looking for, navigate to

https://anaconda.org