Fatal error: Uncaught TypeError: Iyzipay\Model\Mapper\C2CSubMerchantMapper::mapC2CSubMerchantFrom(): Argument #2 ($jsonObject) must be of type object, null given, called in C:\xampp\htdocs\addfirst\vendor\iyzico\iyzipay-php\src\Iyzipay\Model\Mapper\C2CSubMerchantMapper.php on line 59 and defined in C:\xampp\htdocs\addfirst\vendor\iyzico\iyzipay-php\src\Iyzipay\Model\Mapper\C2CSubMerchantMapper.php:12
Stack trace:
#0 C:\xampp\htdocs\addfirst\vendor\iyzico\iyzipay-php\src\Iyzipay\Model\Mapper\C2CSubMerchantMapper.php(59): Iyzipay\Model\Mapper\C2CSubMerchantMapper->mapC2CSubMerchantFrom(Object(Iyzipay\Model\C2CSubMerchant), NULL)
#1 C:\xampp\htdocs\addfirst\vendor\iyzico\iyzipay-php\src\Iyzipay\Model\C2CSubMerchant.php(25): Iyzipay\Model\Mapper\C2CSubMerchantMapper->mapC2CSubMerchant(Object(Iyzipay\Model\C2CSubMerchant))
#2 C:\xampp\htdocs\addfirst\vendor\iyzico\iyzipay-php\src\Iyzipay\Model\C2CSubMerchant.php(31): Iyzipay\Model\C2CSubMerchant::mappedResult('<!DOCTYPE html>...')
#3 C:\xampp\htdocs\addfirst\vendor\iyzico\iyzipay-php\samples\create_c2c_sub_merchant.php(18): Iyzipay\Model\C2CSubMerchant::create(Object(Iyzipay\Request\CreateC2CSubMerchantRequest), Object(Iyzipay\Options))
#4 C:\xampp\htdocs\addfirst\vendor\iyzico\iyzipay-php\samples\create_c2c_sub_merchant.php(22): createC2CSubMerchant()
#5 {main}
thrown in C:\xampp\htdocs\addfirst\vendor\iyzico\iyzipay-php\src\Iyzipay\Model\Mapper\C2CSubMerchantMapper.php on line 12