How to solve npm command Error: EINVAL: invalid argument, mkdir 'xxxx'?

 I encountered this problem when installing the vue environment today, and finally solved it after a lot of hard work.

Here are the solution steps:

reason:

       The reason for this problem: When setting global variables and cache, due to a setting error, the system cannot create a new folder when executing the npm command!

step:      

1. Just go to the C drive and modify the .npmrc file. I cleared the global and cache variables.

      

2.cmd executes "npm -v" and it shows success

 

 Hereby share and record, the program is as deep as the sea, everyone can help each other and win-win! Thanks