SharePoint Online CSOM PowerShell Script to create folders and add permissions

Hi all!

I am rather new to this place I would like to ask a question about CSOM.

I'd like to set unique permissions for a particular folder in a particular document, then I found the following URL on the internet.

【SharePoint Online CSOM PowerShell Script to create folders and add permissions】

Https://sharepoint.stackexchange.com/questions/178984/sharepoint-online-csom-powershell-script-to-create-folders-and-add-permissions

After referring to and executing the inside command, the following error occurred.

ERROR:

Exception calling "ExecuteQuery" with "0" argument(s): "Cannot add a role assignment with empty role definition binding collection."

I executed the below command：

### Get the user credentials
$credential=Get-Credential
$username=$credential.UserName
$password=$credential.GetNetworkCredential().Password
$securePassword = ConvertTo-SecureString $password -AsPlainText -Force
 
### Input Parameters
$url = 'https://aareSharePoint.sharepoint.com/sites/muhsite/'
$usrName = 'Aare Test'
$email = 'aare@aareDomain.com'
 
### References
# Specified the paths where the dll's are located.
Add-Type -Path 'c:\Program Files\Common Files\microsoft shared\Web Server Extensions\15\ISAPI\Microsoft.SharePoint.Client.dll'
Add-Type -Path 'c:\Program Files\Common Files\microsoft shared\Web Server Extensions\15\ISAPI\Microsoft.SharePoint.Client.Runtime.dll'
 
 
### CreateFolder Function
function CreateFolder()
{
    # Connect to SharePoint Online and get ClientContext object.
    $clientContext = New-Object Microsoft.SharePoint.Client.ClientContext($url)
    $credentials = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($username, $securePassword)
    $clientContext.Credentials = $credentials
 
    # Get the SharePoint web
    $web=$clientContext.Web;
    $clientContext.Load($web)
    $clientContext.ExecuteQuery()
 
    # Adds the folder that is located at the specified URL to the collection
    $folder1=$web.Folders.Add('Library1/'+$usrName)
    $folder2=$web.Folders.Add('Library2/'+$usrName)
    $clientContext.Load($folder1)
    $clientContext.Load($folder2)
    $clientContext.ExecuteQuery()
 
    #Get the role required and load it
    $role = $web.RoleDefinitions.GetByName('Edit')
    $usrRole = New-Object Microsoft.SharePoint.Client.RoleDefinitionBindingCollection($clientContext)
    $usrRole.Add($role)
    $clientContext.Load($role)
    $clientContext.Load($usrRole)
 
    #Get the user from the $web
    $usr = $Web.EnsureUser('i:0#.f|membership|'+$email)
    Write-Host $usrRole.Description
    $clientContext.Load($usr)
    $clientContext.ExecuteQuery()
 
    # Display the folder name and URL
    Write-Host -ForegroundColor Green 'Folder Name: ' $folder1.Name ' URL: '$folder1.ServerRelativeUrl;
    Write-Host -ForegroundColor Green 'Folder Name: ' $folder2.Name ' URL: '$folder2.ServerRelativeUrl;
 
    #Break inheritance and remove existing permissions
    $folder1.ListItemAllFields.BreakRoleInheritance($false, $true)
    $folder2.ListItemAllFields.BreakRoleInheritance($false, $true)
 
    # Apply the permission roles to the list.
    $clientContext.Load($folder1.ListItemAllFields.RoleAssignments.Add($usr, $usrRole))
    $clientContext.Load($folder2.ListItemAllFields.RoleAssignments.Add($usr, $usrRole))
    $folder1.Update()
    $folder2.Update()
    $clientContext.ExecuteQuery()
 
}
#Execute the function
CreateFolder

How can I resolve the above error?

Thanks!

Tobey.