Meraki VPN L2TP with Preshared key via Intune

Hey everyone, I'm trying to deploy Meraki VPN L2TP with Preshared key via Intune. I have previously tried to deploy the rasphone.pbk file using PS Script to "$env:APPDATA\Microsoft\Network\Connections\Pbk\rasphone.pbk". The file was deployed successfully but Preshared key is not being copied. The next method I used was to create a VPN profile using PS script. I used the script below but EncryptionLevel Optional is being returned as error.

# Add the VPN connection
Add-VpnConnection `
-Name "MY VPN" `
-ServerAddress "myvpn.com" `
-TunnelType L2tp `
-L2tpPsk "myPSK" `
-AuthenticationMethod Pap `
-EncryptionLevel Optional `
-Force `
-AllUserConnection $True

# Path to the rasphone.pbk file for all user connections
$pbkPath = "C:\ProgramData\Microsoft\Network\Connections\Pbk\rasphone.pbk"

# Ensure the file exists
if (Test-Path -Path $pbkPath) {
# Read the contents of the file
$pbkContent = Get-Content -Path $pbkPath -Raw

# Modify the contents to enforce PAP (128) and require username and password
$pbkContent = $pbkContent -replace "(?msi)^(\[$([regex]::Escape("MY VPN"))\].*?^Authentication=).*$", '${1}128'

# Write the modified contents back to the file
$pbkContent | Set-Content -Path $pbkPath
} else {
Write-Error "The rasphone.pbk file does not exist at the specified path: $pbkPath"
}

Error:
WARNING: The currently selected encryption level requires EAP or MS-CHAPv2 logon security methods. Data encryption will not occur for Pap or Chap.

The requirements are to use PAP and rasphone.pbk should be created under "$env:APPDATA\Microsoft\Network\Connections\Pbk\rasphone.pbk" and preshared key should be copied. So that I can connect to VPN settings via taskbar bottom right by entering username and password.

Can someone assist to modify the script or provide any alternate solution?