unrecognition error

[Nahas18]

I am trying to install the new release of powershell psreadline and this message keeps on appearing to me" 'Install-Module' is not recognized as an internal or external command,
operable program or batch file.

[daxian-dbw]

That indicates you don't have the PowerShellGet module available. You will need to manually install the PowerShellGet module first and then use it to install newer versions of PSReadLine.