Lib error While api integration of amazon seller

Need Help
1

Fatal error: Declaration of Cake\Cache\CacheEngine::get($key, $default = null) must be compatible with Psr\SimpleCache\CacheInterface::get(string $key, mixed $default = null): mixed in E:\xampp\htdocs\kunhar\vendor\cakephp\cakephp\src\Cache\CacheEngine.php on line 236

How I resolve this

2

What CakePHP version are you running? How can we reproduce that error?
What code did you execute so this error appears?

3

I am using cake 4.0

namespace App\Controller\Admin;

use App\Controller\Admin\AppController;
use Cake\Routing\Router;
use Cake\Event\EventInterface;
use Cake\ORM\TableRegistry;
use Cake\ORM\Locator\LocatorAwareTrait;
use Cake\Datasource\ConnectionManager;

//require_once(WWW_ROOT . ‘amazon_seller’ . DS . ‘vendor’ . DS . ‘autoload.php’);
require_once(ROOT . DS . ‘vendor’ . DS . ‘amazon_seller’ . DS . ‘vendor’ . DS . ‘autoload.php’);
use SellingPartnerApi\Api\SellersV1Api as SellersV1Api;
use SellingPartnerApi\Configuration;
use SellingPartnerApi\Endpoint;

4

First of all: If you recently created a new CakePHP Project you should be on CakePHP 4.4, not CakePHP 4.0

Second: You don’t need to “re-require” the autoload.php from your API library because CakePHP already loads the autoloader in the index.php
See app/index.php at 4.x · cakephp/app · GitHub
So every library you installed via e.g. composer require jlevers/selling-partner-api is automatically available in your cakephp project.

So all you need for external libraries to work is to add the apropriate use statements in your class and you should be fine.

5

Thanks for the suggestion it is work good in cake 4.4