powershell script get permissions for the user in sharepoint online

Question

in the below PowerShell script I want to get the permissions assigned to the users. $spgroup.roles is not displaying anything. Can any one help me on this,

#Add - PSSnapin Microsoft.SharePoint.PowerShell

$host.Runspace.ThreadOptions = "ReuseThread" 

Function Get-SiteGroup-Owners 
{ 
    param ($sCSOMPath,$sSiteUrl,$sUserName,$sPassword,$FileName) 
    try 
    {    
        $sCSOMRuntimePath=$sCSOMPath +  "\Microsoft.SharePoint.Client.Runtime.dll"         
        $sCSOMPathdll=$sCSOMPath +  "\Microsoft.SharePoint.Client.dll"              
        Add-Type -Path $sCSOMPathdll          
        Add-Type -Path $sCSOMRuntimePath        

        #SPO Client Object Model Context 
        $spoCtx = New-Object Microsoft.SharePoint.Client.ClientContext($sSiteUrl) 
        $spoCredentials = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($sUserName, $sPassword)   
        #$spoCredentials = New-Object System.Net.NetworkCredential($sUserName, $sPassword)    # for on premise
        $spoCtx.Credentials = $spoCredentials        

        $web = $spoCtx.Web
        $spGroups =$web.SiteGroups

        $spoCtx.Load($web)
        $spoCtx.Load($spGroups)
        $spoCtx.ExecuteQuery() 

        Write-Host "Groups Count= $($spGroups.Count)"

        foreach($spGroup in $spGroups)
        { 
            $site =@()
            $users = $spGroup.Users
            $spoCtx.Load($spGroup)
            $spoCtx.Load($users)
            $spoCtx.ExecuteQuery()

            foreach($spUser in $users)
            { 
                try
                {
                    $spoCtx.Load($spUser)
                    $spoCtx.ExecuteQuery()



                    $site += New-Object -TypeName PSObject -Property @{
                                    SiteUrl =$sSiteUrl
                                    GroupName = $spGroup.Title
                                    PrincipalType= $spGroup.Roles
                                    User =$spUser.LoginName
                                    UserEmail =$spUser.Email
                                    } | Select  SiteUrl,GroupName,PrincipalType,User,UserEmail


                          Write-Host "This is test" $.Roles

                }
                catch [System.Exception] 
                { 
                    Write-Host -ForegroundColor Red $_.Exception.ToString()    
                }    


            } 
            Write-Host $sCSOMPath

           # $site| Export-CSV ($sCSOMPath+"\"+$FileName+".csv") -NoTypeInformation -Append #-Encoding UTF8          

        }       

        Read-Host -Prompt "file created Successfull..! in the following path $sCSOMPath, Press any key to close this window"

    } 
    catch [System.Exception] 
    { 
        Write-Host -ForegroundColor Red $_.Exception.ToString()    
        Read-Host -Prompt "Operation failed..! Press any key to close this and re run the script"
    }     
} 

$FileName= "SiteCollection_Group_Members"          
$sSiteUrl = "https://mysite.test.com"  
$sUserName = "admin@micrososft.com" 
$sPassword = ConvertTo-SecureString "Password" -AsPlainText -Force 

$scriptpath = $MyInvocation.MyCommand.Path
$dir = Split-Path $scriptpath

Write-Host "Getting Site Collection group Members"
Write-Host "-----------------------------------" 
Get-SiteGroup-Owners -sCSOMPath $dir -sSiteUrl $sSiteUrl -sUserName $sUserName -sPassword $sPassword  -FileName $FileName