The error message is as follows:
pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available
The reason for the error is that the environment variable configuration of Anaconda is not complete enough. Open the computer properties -> advanced system settings -> environment variables, find the path, edit, and the complete configuration is as follows:
D:\ProgramData\Anaconda3
D:\ProgramData\Anaconda3\Scripts
D:\ProgramData\Anaconda3\Library\bin