Customer connect to magento2 from cakephp

I need to create a script that let customer to get status connected on Magento 2 when he connect in an external website (CakePhp)
NB: Magento and CakePhp are in the same server.

when I use this script:

<?php
ini_set('display_errors', 1);
error_reporting(E_ALL);
use MagentoFrameworkAppBootstrap;
require __DIR__ . '/app/bootstrap.php';
$bootstrap = Bootstrap::create(BP, $_SERVER);
$obj = $bootstrap->getObjectManager();
$storeManager = $obj->get('MagentoStoreModelStoreManagerInterface');
$objectManager =  MagentoFrameworkAppObjectManager::getInstance();
$state = $objectManager->get('MagentoFrameworkAppState');
$state->setAreaCode('frontend');
$productMetadata = $objectManager->get('MagentoFrameworkAppProductMetadataInterface');

$customerEmail ="[email protected]";

$CustomerModel = $objectManager->create('MagentoCustomerModelCustomer');
$CustomerModel->setWebsiteId(1); //Here 1 means Store ID**
$CustomerModel->loadByEmail($customerEmail);
$customerId = $CustomerModel->getId();

echo $customerId ;
$objectManager = MagentoFrameworkAppObjectManager::getInstance();
// Load customer
$customer = $objectManager->create('MagentoCustomerModelCustomer')->load($customerId);
// Load customer session
$customerSession = $objectManager->create('MagentoCustomerModelSession');
$customerSession->setCustomerAsLoggedIn($customer);
if($customerSession->isLoggedIn()) {
    echo "Customer Logged in";
}else{
    echo "customer is Not Logged in";
}
?>

When I execute this code I have this error in cakephp

Error: Cannot redeclare ZendDiactoroscreateUploadedFile()
File /vendor/laminas/laminas-diactoros/src/functions/create_uploaded_file.legacy.php