输入nvm命令提示“This is not the package you are looking for: please go to nvm.sh

nvm 同级目录中，删除npm、npm-cache目录。e.g.

nvm file path: C:\Users\NAME\AppData\Roaming\nvm
delete files:
1.  C:\Users\NAME\AppData\Roaming\npm
2.  C:\Users\NAME\AppData\Roaming\npm-cache