mailchimp subscription form and php doesn't work

Hi,
I use your subscription form php file (see below):
I entered my MailChimp API Key and MailChimp List ID in php file.
Mailchimp calls List ID - Audience ID (Audience-All Contacts-Settings-Audience Name and Defaults - there is Audience ID here)
I'm getting "Invalid Resource" message in the red box (top right corner on my website).
check:

Form:
<div class="widget-subscribe-form-result" id="contact"></div>
<form id="widget-subscribe-form" action="/include/subscribe-anp.php" method="post" class="mb-0">
<div class="input-group mx-auto">
<input type="email" id="widget-subscribe-form-email" name="widget-subscribe-form-email" class="form-control form-control-lg not-dark required email" placeholder="Enter your Email" style="border-top-left-radius: 23px; border-bottom-left-radius: 23px;">
<div class="input-group-append">
<button class="btn btn-lg bg-color" type="submit" style="border-top-right-radius: 23px; border-bottom-right-radius: 23px;">Subscribe</button>
</div>
</div>
</form>
</div>

I use your php:
<?php

$apiKey = ''; // Your MailChimp API Key
$listId = ''; // Your MailChimp List ID

if( isset( $_GET['list'] ) AND $_GET['list'] != '' ) {
$listId = $_GET['list'];
}

$email = $_POST['widget-subscribe-form-email'];
$fname = isset( $_POST['widget-subscribe-form-fname'] ) ? $_POST['widget-subscribe-form-fname'] : '';
$lname = isset( $_POST['widget-subscribe-form-lname'] ) ? $_POST['widget-subscribe-form-lname'] : '';
$datacenter = explode( '-', $apiKey );
$submit_url = "https://" . $datacenter[1] . ".api.mailchimp.com/3.0/lists/" . $listId . "/members/" ;

if( isset( $email ) AND $email != '' ) {

$merge_vars = array();
if( $fname != '' ) { $merge_vars['FNAME'] = $fname; }
if( $lname != '' ) { $merge_vars['LNAME'] = $lname; }

$data = array(
	'email_address' => $email,
	'status' => 'subscribed'
);

if( !empty( $merge_vars ) ) { $data['merge_fields'] = $merge_vars; }

$payload = json_encode($data);

$auth = base64_encode( 'user:' . $apiKey );

$header   = array();
$header[] = 'Content-type: application/json; charset=utf-8';
$header[] = 'Authorization: Basic ' . $auth;

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $submit_url);
curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_TIMEOUT, 10);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_POSTFIELDS, $payload);

$result = curl_exec($ch);
curl_close($ch);
$data = json_decode($result);

if ( isset( $data->status ) AND $data->status == 'subscribed' ){
	echo '{ "alert": "success", "message": "You have been **successfully** subscribed to our Email List." }';
} else {
	echo '{ "alert": "error", "message": "' . $data->title . '" }';
}

}

?>

found solution . close the case