Fatal error: Uncaught TypeError: sizeof(): Argument #1 ($value) must be of type Countable|array, string given in C:\laragon\www\4TresSro-PVE old style\vendor\paypal\rest-api-sdk-php\lib\PayPal\Common\PayPalModel.php:176 Stack trace: #0 C:\laragon\www\4TresSro-PVE old style\vendor\paypal\rest-api-sdk-php\lib\PayPal\Common\PayPalModel.php(176): sizeof('https://request...') #1 C:\laragon\www\4TresSro-PVE old style\vendor\paypal\rest-api-sdk-php\lib\PayPal\Common\PayPalModel.php(278): PayPal\Common\PayPalModel->_convertToArray(Array) #2 C:\laragon\www\4TresSro-PVE old style\vendor\paypal\rest-api-sdk-php\lib\PayPal\Common\PayPalModel.php(293): PayPal\Common\PayPalModel->toArray() #3 C:\laragon\www\4TresSro-PVE old style\vendor\paypal\rest-api-sdk-php\lib\PayPal\Api\Webhook.php(133): PayPal\Common\PayPalModel->toJSON() #4 C:\laragon\www\4TresSro-PVE old style\vendor\paypal\rest-api-sdk-php\sample\notifications\CreateWebhook.php(54): PayPal\Api\Webhook->create(Object(PayPal\Rest\ApiContext)) #5 {main} thrown in C:\laragon\www\4TresSro-PVE old style\vendor\paypal\rest-api-sdk-php\lib\PayPal\Common\PayPalModel.php on line 176