Install packages failed

I have installed Anaconda and created torch’s virtual environment.I want to use torch in jupyter notebook,so I must install nb_conda.However, the package “nb_conda_kernels” installed failed(I had installed nb_conda successfully a few days ago,but for some reasons,I uninstalled Anaconda. When I installed nb_conda today,it occurred error.The error is as follows.)


  • Client OS: Windows10
  • Python version:3.8.5
  • PyTorch/TensorFlow version:torch 1.10.0(python version is 3.6 in torch environment)