Credit notes line item array always null

[upultfs]

Hi There,

I try to get Credit notes data using this package but expect line items all other data can receive. could you pls tell me where I'm wrong? i have attached below the Request and Response data .thanks.

Request

$if_modified_since = $_GET["credit_notes_date"];
$statuses = 'Status=="PAID"';
$page = 1;
$apiResponse2 = $apiInstance->getCreditNotes($xeroTenantId,$if_modified_since,$statuses,$page);
var_dump($apiResponse2->getCreditNotes());

Response

/var/www/xerotfsapi/authorizedResource.php:307:
array (size=1)
0 =>
object(XeroAPI\XeroPHP\Models\Accounting\CreditNote)[22]
protected 'container' =>
array (size=30)
'type' => string 'ACCRECCREDIT' (length=12)
'contact' =>
object(XeroAPI\XeroPHP\Models\Accounting\Contact)[32]
...
'date' => string '/Date(1650585600000+0000)/' (length=26)
'due_date' => null
'status' => string 'PAID' (length=4)
'line_amount_types' => string 'Exclusive' (length=9)
'line_items' =>
array (size=0)
...
'sub_total' => float 2697.54
'total_tax' => float 404.63
'total' => float 3102.17
'cis_deduction' => null
'cis_rate' => null
'updated_date_utc' => string '/Date(1652822145173+0000)/' (length=26)
'currency_code' => string 'NZD' (length=3)
'fully_paid_on_date' => string '/Date(1650585600000+0000)/' (length=26)
'credit_note_id' => string 'baaa9b47-7a3f-4646-a7f0-91d54f84c2f1' (length=36)
'credit_note_number' => string 'CN-0007' (length=7)
'reference' => string '87675' (length=5)
'sent_to_contact' => null
'currency_rate' => float 1
'remaining_credit' => float 0
'allocations' =>
array (size=1)
...
'applied_amount' => null
'payments' =>
array (size=0)
...
'branding_theme_id' => string 'f8974d1a-6eb8-49d7-973e-f54a30f93bdc' (length=36)
'status_attribute_string' => null
'has_attachments' => boolean false
'has_errors' => boolean false
'validation_errors' => null
'warnings' => null