Disabling Windows Defender script shows an error

[mymirai-nikki]

some registry didn't exists, why the script trying to access non-exists registry key?

Set-ItemProperty : Cannot find path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection' because it does not exist.
At C:\disable.ps1:33 char:1
+ Set-ItemProperty -Path "HKLM:\SOFTWARE\Policies\Microsoft\Windows Def ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : ObjectNotFound: (HKLM:\SOFTWARE\...Time Protection:String) [Set-ItemProperty], ItemNotFoundException
    + FullyQualifiedErrorId : PathNotFound,Microsoft.PowerShell.Commands.SetItemPropertyCommand

Set-ItemProperty : Cannot find path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection' because it does not exist.
At C:\disable.ps1:34 char:1
+ Set-ItemProperty -Path "HKLM:\SOFTWARE\Policies\Microsoft\Windows Def ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : ObjectNotFound: (HKLM:\SOFTWARE\...Time Protection:String) [Set-ItemProperty], ItemNotFoundException
    + FullyQualifiedErrorId : PathNotFound,Microsoft.PowerShell.Commands.SetItemPropertyCommand

Set-ItemProperty : Cannot find path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection' because it does not exist.
At C:\disable.ps1:35 char:1
+ Set-ItemProperty -Path "HKLM:\SOFTWARE\Policies\Microsoft\Windows Def ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : ObjectNotFound: (HKLM:\SOFTWARE\...Time Protection:String) [Set-ItemProperty], ItemNotFoundException
    + FullyQualifiedErrorId : PathNotFound,Microsoft.PowerShell.Commands.SetItemPropertyCommand