PowerShell Script to Follow a SharePoint Site for a User

Good morning!

I've been struggling with this for a while now. I've tried multiple scripts that are supposed to do this and run into many errors. I have a new script I found, which seems to mostly work, but it gives me this one error:

Write-Error: Response status code does not indicate success: Forbidden (Forbidden).

It looks like a permissions issue. I'm executing this in VSC, running under my user account, but when it connects to Graph, I'm authenticating it as my admin account, which has the following roles:

I do realize how easy it is for users to follow a site, but this is one of those messed-up political situations, so I need a way to do this. 

After the error, it just hangs here:

Add users to follow site(. [Adding user 'Ken Ce.]

Here is the script I'm using:

# Example: .\Add-FollowUserSite.ps1 -UsersMail "user1@[domain].com","user2@[domain].com","user3@[domain].com" -SitesUrl "https://[domain].sharepoint.com"

[CmdletBinding()]
param(
[Parameter(Mandatory=$true,HelpMessage="List of Users Mails")]
  [String[]]$UsersMail=@("user1@[domain].com","user2@[domain].com","user3@[domain].com"),
  [Parameter(Mandatory=$true,HelpMessage="List of SharePoint Url to follow")]
  [String[]]$SitesUrl=@("https://[domain].sharepoint.com")
)

Begin{

    # Validate Modules ffor Microsoft graph users exist
    if (Get-Module -ListAvailable -Name microsoft.graph.users) {
        Write-Host "Microsoft Graph Users Module Already Installed"
    } 
    else {
        try {
            Install-Module -Name microsoft.graph.users -Scope CurrentUser -Repository PSGallery -Force -AllowClobber 
        }
        catch [Exception] {
            $_.message 
        }
    }
    # Validate Modules ffor Microsoft graph users exist
    if (Get-Module -ListAvailable -Name microsoft.graph.sites) {
        Write-Host "Microsoft Graph Sites Module Already Installed"
    } 
    else {
        try {
            Install-Module -Name microsoft.graph.sites -Scope CurrentUser -Repository PSGallery -Force -AllowClobber 
        }
        catch [Exception] {
            $_.message 
        }
    }

    # Import Modules Microsoft.Graph.users and Microsoft.Graph.sites to be used
    Import-Module Microsoft.Graph.users
    Import-Module Microsoft.Graph.sites

    Write-Host "Connecting to Tenant" -f Yellow
    Connect-MgGraph -Scopes "Sites.ReadWrite.All", "User.Read.All"

    Write-Host "Connection Successful!" -f Green
}
Process{
    $count = 0

    $UsersMail | foreach {

        #Get user Graph properties
        $mail = $_

        $user = Get-MgUser -ConsistencyLevel eventual -Count 1 -Search ([string]::Format('"Mail:{0}"',$mail))
        $SitesUrl | foreach {

            #Get Site Graph properties
            $domain = ([System.Uri]$_).Host
            $AbsolutePath = ([System.Uri]$_).AbsolutePath
            $uriSite = [string]::Format('https://graph.microsoft.com/v1.0/sites/{0}:{1}',$domain,$AbsolutePath)
            $site = Invoke-MgGraphRequest -Method GET $uriSite

#Create Body for Post request
$body = @'
    {
        "value": [
            {
                "id": "{$SiteID}"
            }
        ]
    }
'@.Replace('{$SiteID}',$site.id)
            
            #Graph call that include user to follow site
            $uriFollow = [string]::Format('https://graph.microsoft.com/v1.0/users/{0}/followedSites/add',$user.Id)
           
            #Include follow option from user to SharePoint Site
            try{
                $response = Invoke-MgGraphRequest -Method POST $uriFollow -Body $body -ContentType "application/json"
                Write-Host "User '$($user.DisplayName)' is following site '$($AbsolutePath)'" -f Green
            }
            catch {
                Write-Error $_.Exception
            } 
            
        }
        
        $count += 1 
        #progress bar
        Write-Progress -Activity 'Add users to follow site(s)' -Status "Adding user '$($user.DisplayName)' to follow sites... ($($count)/$($UsersMail.Count))" -PercentComplete (($count / $UsersMail.Count) * 100)
    }
}
End {
    Disconnect-MgGraph
    Write-Host "Finished" -ForegroundColor Green
}
       

Any help would be greatly appreciated.