The vue-cli2.9.6 version cannot be uninstalled.

I want to install @ vue/cli, but I find that the vue-cli2.9.6 version cannot be uninstalled

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node10.15.0@vuevue -V2.9.6.
@vue/cli:

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did not report an error, there are several warnings, but the output vue version, or 2.9.6, I would like to ask friends, who has encountered similar problems, how to solve ah? Thank you

Apr.13,2022

Uninstall before installing

The
  

problem is finally solved. The solution is that I need to run cmd as an administrator and set up npm config set prefix.

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1e99ac2-177b.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e99ac2-177b.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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