Collecting package metadata (current_repodata.json): ...working... failed UnavailableInvalidChannel: The channel is not accessible or is invalid. channel name: simple channel url: https://pypi.tuna.tsinghua.edu.cn/simple 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.
输入：
conda config --remove-key channels
