Failed to execute POST call

[Eulnono76]

Hello,

Trying to insert Invoice via webservice, but getting "Failed to execute POST call" :

require 'vendor/autoload.php';

use Salaros\Vtiger\VTWSCLib\WSClient;


$client = new WSClient('http://vtiger.weaccess.pro/', 'admin', 'mypass');

$array = Array(
'subject'=> 'sujet',
'invoicedate'=>'01-01-2020',
'duedate' => '01-01-2020',
'account_id'=>'11x4',
'invoicestatus'=>'AutoCreated',
'assigned_user_id' => '1',
'createdtime'=>'01-01-2020',
'modifiedtime' => '01-01-2020',
'bill_street'=> 'Adresse de Facturation',
'ship_street' => 'Adresse de Livraison',
    'productid' => '14x114',
    'quantity' => '1.000',
    'listprice' => '70.00000000',
    'tax1' => '20.000',
    'tax2' => '20.000',
    'tax3' => '20.000',
    'pre_tax_total' => '3999.00000000',
    'received' => '0.00000000',
    'balance' => '6398.40000000',
    'hdnS_H_Percent' => '0.00000000',
    'potential_id' => '',
    'image' => '',
    'purchase_cost' => '20.00000000',
    'margin' => '50.00000000',
    'source' => 'CRM',
    'region_id' => '0',
);


var_dump($client->entities->createOne('Invoice',$array));

Full error :
Fatal error: Uncaught Salaros\Vtiger\VTWSCLib\WSException: [FAILED_SENDING_REQUEST]: Failed to execute POST call on "http://vtiger.
me/webservice.php" URL

thrown in /var/www/vtigercrm/Webservice/vendor/salaros/vtwsclib-php/src/Session.php on line 250

Many thanks.