InvalidArgumentException: Id string cannot be empty in /home/sisters/public_html/wp-content/plugins/vidsocial/admin/accounting-php/paypal/paypal/rest-api-sdk-php/lib/PayPal/Validation/ArgumentValidator.php:28
Stack trace:
#0 /home/sisters/public_html/wp-content/plugins/vidsocial/admin/accounting-php/paypal/paypal/rest-api-sdk-php/lib/PayPal/Api/Sale.php(596): PayPal\Validation\ArgumentValidator::validate('', 'Id')
#1 /home/sisters/public_html/wp-content/plugins/vidsocial/admin/accounting-php/paypal-refund.php(125): PayPal\Api\Sale->refund(Object(PayPal\Api\Refund), Object(PayPal\Rest\ApiContext))
#2 {main}