Call to a member function cancelSkybill() on null

Cancelling a remote shipment through the following error :

Call to a member function cancelSkybill() on null dans Drupal\commerce_chronopost\Plugin\Commerce\ShippingMethod\Chronopost->cancelRemote() (ligne 840 de /var/www/artzner-prod/html/web/modules/contrib/commerce_chronopost/src/Plugin/Commerce/ShippingMethod/Chronopost.php).