jquery, rest api, return status failed net::ERR_NETWORK_CHANGED

Я делаю анисхронный запрос на API, который должен сделать звонок

но в ответ получаю ошибку failed net::ERR_NETWORK_CHANGED

Что это может быть и как решить эту проблему?

if (phoneCallResponse.code === 'success') {
        jQuery('.phone-call-info-text').text('Your call is being connected to a recovery advisor. Please hold.');
        jQuery('#call-timer-button').hide();
        jQuery('#no-answer-buttons').hide();
        clearInterval(myTimer);

        let showAdvisor = true;

        const refreshId = setInterval(async function () {
            const result = await request(apiRequests.dataPickupPhone,
                {
                    'token': phoneCallResponse.message.token,
                    'showAdvisor': showAdvisor
                }, "GET");

            if (result.message.status === 'DECLINED_CALL' || result.message.status === 'ACTIVE_CALL_USER_HANG_UP' || result.message.status === 'QUEUE_USER_HANG_UP') {
                hideTimer();
                clearInterval(refreshId);
            }

            if (result.message.status === 'CONNECTED_TO_MANAGER') {
                if (result.message.managerName) {
                    managerData.managerExt = result.message.et;
                    managerData.managerName = result.message.managerName;
                    managerData.managerUrl = result.message.url;
                    managerData.managerEmail = result.message.email1;
                    managerData.managerPhone = result.message.phone;
                }
                if (typeof managerData.managerName !== 'undefined' && showAdvisor === true) {
                    jQuery('.phone-call-consultant-image').addClass('active');
                    jQuery('#new-steps-form').find('.consultation-img').attr('src', managerData.managerUrl);
                    jQuery('.phone-call-info-text').text('');
                    jQuery('.phone-call-info-text').append('You are now speaking with a recovery advisor: ' + managerData.managerName + '<br>'
                        + 'Direct Phone: ' + managerData.managerPhone + '<br>'
                        + 'Email:' + managerData.managerEmail);
                    showAdvisor = false;
                } else {
                    if (showAdvisor === true) {
                        jQuery('.phone-call-info-text').text('You are now speaking with a recovery advisor.');
                        showAdvisor = false;
                    }
                }
            }
        }, 3000);
    }else{
        jQuery('#no-answer-buttons').show();
        clearInterval(myTimer);
    }

$curl = curl_init();

        curl_setopt_array($curl, array(
            CURLOPT_URL => $url,
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_MAXREDIRS => 10,
            CURLOPT_CONNECTTIMEOUT => 30,
            CURLOPT_TIMEOUT => 30,
            CURLOPT_FOLLOWLOCATION => true,
            CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
            CURLOPT_CUSTOMREQUEST => 'POST',
            CURLOPT_POSTFIELDS => $json,
            CURLOPT_HTTPHEADER => array(
                'x-salvagedata-api-key: ju8123u8hndsabh231iy7ewygufba89g71uy',
                'Content-Type: application/json'
            ),
        ));

        $result = curl_exec($curl);
        if ($pickupPhone = curl_exec($curl) !== false) {
            $result = json_decode($result);
            if (!empty($result) AND $result->success === true AND is_null($result->call_exists)) {
                return new WP_Error('success',
                    __(array('token' => $params['token']), 'rest-tutorial'),
                    array('status' => 200)
                );
            } elseif (!empty($result) AND $result->success === true AND !empty($result->call_exists) AND $result->call_exists === true) {
                return new WP_Error('error',
                    __(array('callExist' => true), 'rest-tutorial'),
                    array('status' => 200)
                );
            } else {
                return new WP_Error('error',
                    __(array('callFailed' => true), 'rest-tutorial'),
                    array('status' => 200)
                );
            }
        }

но я получаю ошибку

https://i.stack.imgur.com/EbQ9k.png