按照教程修改user目录我的文件夹名之后，有的东西不能用了就，比如cmd中无法运行pip了，请问怎么处理

如题

C:\Users\yong duan>pip install numpy
Fatal error in launcher: Unable to create process using '"C:\Users\??\AppData\Local\Programs\Python\Python39\python.exe"  "C:\Users\yong duan\AppData\Local\Programs\Python\Python39\Scripts\pip.exe" install numpy': ???????????