can not install pinia with pnpm

[leila01010]

`pnpm : File C:\Users\Administrator\AppData\Roaming\npm\pnpm.ps1 cannot be loaded because running scripts is disabled on this system. For more information, see
about_Execution_Policies at https:/go.microsoft.com/fwlink/?LinkID=135170.
At line:1 char:1

• pnpm install pinia

•   + CategoryInfo          : SecurityError: (:) [], PSSecurityException
    + FullyQualifiedErrorId : UnauthorizedAccess
  

`