Manage Access to my Organization Workspaces (Via PowerShell)

Hi,

I'm trying to get the permissions on my workspaces  (Via Powershell (and) API....)
These are the modern workspaces
For example, I would like to see which security group (or UPN)  has the role viewer or member on such or such modern work space ?

I test this power shell script below, but it doesn't return anything correct

Ideally ,If a person has a script regarding this need  on  applications, I am also a taker

Thanks a lot for any help

Best regards and merci 

Christophe

Import-Module MicrosoftPowerBIMgmt

$password = "XXXXXXXXX" | ConvertTo-SecureString -asPlainText -Force
$username = "XXXXXXXXXX"
$credential = New-Object System.Management.Automation.PSCredential($username, $password)

Connect-PowerBIServiceAccount -Credential $credential
$Session = New-PSSession -ConfigurationName Microsoft.Exchange `
-ConnectionUri https://outlook.office365.com/powershell-liveid/ `
-Credential $credential `
-Authentication Basic `
-AllowRedirection

Import-PSSession $Session

$Groups = Get-UnifiedGroup #-Scope Organization
$Groups | ForEach-Object {
$group = $_
Get-UnifiedGroupLinks -Identity $group.Name -LinkType Members -ResultSize Unlimited | ForEach-Object {
$member = $_
New-Object -TypeName PSObject -Property @{
Member = $member.Name
Group = $group.Name
}
}
} | Export-CSV "C:\\Users\\LLLLLLL\\OneDrive\\Documents\\RRRR\\Power BI\\Administration\PowerShell\\WSPowerBIGroupMembers_unified.csv" -NoTypeInformation -Encoding UTF8

Remove-PSSession $Session

Disconnect-PowerBIServiceAccount