SharePoint Online: Create Multiple Subsites from a CSV File using PowerShell

#Site collection URL
$SiteURL = "https://crescent.sharepoint.com/sites/intranet"

#Connect to Pnp Online
Connect-PnPOnline -Url $SiteURL -Credentials (Get-Credential)

#Define subsites in array
$Subsites = "Sales","Production", "Marketing", "Support"

#Iterate through each site
ForEach($Site in $Subsites)
{
    #Create subsite
    New-PnPWeb -Title $Site -Url $Site -InheritNavigation -Template STS#3
}

#Function to Create Subsite
Function Create-PnPSubsite
{
  param
    (
        [Parameter(Mandatory=$true)] [string]$SiteCollectionURL  = $(throw "Please Enter the Site Collection URL!"),
        [Parameter(Mandatory=$true)] [string]$Title  = $(throw "Please Enter the Subsite Title!"),
        [Parameter(Mandatory=$true)] [string]$URL = $(throw "Please Enter the Subsite URL!"),
        [Parameter(Mandatory=$false)] [string]$Description = [string]::Empty,
        [Parameter(Mandatory=$false)] [string]$BreakInheritance = "False",
        [Parameter(Mandatory=$true)] [string]$Template = $(throw "Please Provide the Site Template!")
    )
    Try{
        #Connect to PnP Online
        Connect-PnPOnline -Url $SiteCollectionURL -Credentials $Cred #-UseWebLogin

        #Check if subsite exists
        $Subsite = Get-PnPWeb -Identity $URL -ErrorAction SilentlyContinue
        If($Subsite -eq $null) 
        {
            #Create subsite
            $BreakInheritanceFlag = [System.Convert]::ToBoolean($BreakInheritance) 
            $SubSite = New-PnPWeb -Title $Title -Url $URL -Description $Description -BreakInheritance:$BreakInheritanceFlag -Template $Template 
            Write-Host "Created Subsite:"$URL -ForegroundColor Green
        }
        Else
        {
            Write-Host "Subsite already exist:"$URL -ForegroundColor Yellow
        }
    }
    catch {
        write-host "Error: $($_.Exception.Message)" -foregroundcolor Red
    }
}

#Set CSV File path
$CSVFilePath = "C:\Temp\Subsites.csv"

#Get Credentials to connect
$Cred = Get-Credential

#Read from CSV and call the function to create subsites
Import-Csv $CSVFilePath | ForEach-Object {
   Create-PnPSubsite -SiteCollectionURL $_.SiteCollectionURL -Title $_.SubSiteTitle -URL $_.URL -Description $_.Description -BreakInheritance $_.BreakInheritance -Template $_.Template 
}