The error message:
Error output: 'source' is not recognized as an internal or external
command, operable program or batch file.
comes from a Windows command shell. But instructions you are following are for Linux. You need to read the instructions for Windows ... which are further down the page.
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…