case_class_server/frontend/modules/api/config.php

<?php
return $configs = [
    'components' => [
        'request' => [
            'csrfParam' => '_csrf-backend',
        ],
        'session' => [
            // this is the name of the session cookie used for login on the backend
            'name' => 'advanced-backend',
        ],
    ],
];