Fatal error: Uncaught TypeError: sizeof(): Argument #1 ($value) must be of type Countable|array, string given in /confereneceLV/conferenece_com/conferenceseries_com/fdms/backend/vendor/paypal/rest-api-sdk-php/lib/PayPal/Common/PayPalModel.php:179 Stack trace: #0 /confereneceLV/conferenece_com/conferenceseries_com/fdms/backend/vendor/paypal/rest-api-sdk-php/lib/PayPal/Common/PayPalModel.php(179): sizeof() #1 /confereneceLV/conferenece_com/conferenceseries_com/fdms/backend/vendor/paypal/rest-api-sdk-php/lib/PayPal/Common/PayPalModel.php(281): PayPal\Common\PayPalModel->_convertToArray() #2 /confereneceLV/conferenece_com/conferenceseries_com/fdms/backend/vendor/paypal/rest-api-sdk-php/lib/PayPal/Common/PayPalModel.php(296): PayPal\Common\PayPalModel->toArray() #3 /confereneceLV/conferenece_com/conferenceseries_com/fdms/backend/vendor/paypal/rest-api-sdk-php/lib/PayPal/Api/Plan.php(355): PayPal\Common\PayPalModel->toJSON() #4 /confereneceLV/conferenece_com/conferenceseries_com/fdms/backend/vendor/paypal/rest-api-sdk-php/sample/billing/CreatePlan.php(66): PayPal\Api\Plan->create() #5 /confereneceLV/conferenece_com/conferenceseries_com/fdms/backend/vendor/paypal/rest-api-sdk-php/sample/billing/UpdatePlan.php(14): require('...') #6 /confereneceLV/conferenece_com/conferenceseries_com/fdms/backend/vendor/paypal/rest-api-sdk-php/sample/billing/CreateBillingAgreementWithCreditCard.php(12): require('...') #7 /confereneceLV/conferenece_com/conferenceseries_com/fdms/backend/vendor/paypal/rest-api-sdk-php/sample/billing/GetBillingAgreement.php(11): require('...') #8 /confereneceLV/conferenece_com/conferenceseries_com/fdms/backend/vendor/paypal/rest-api-sdk-php/sample/billing/SearchBillingTransactions.php(11): require('...') #9 {main} thrown in /confereneceLV/conferenece_com/conferenceseries_com/fdms/backend/vendor/paypal/rest-api-sdk-php/lib/PayPal/Common/PayPalModel.php on line 179