Exception: Notice: Use of undefined constant MCRYPT_RIJNDAEL_256 - assumed 'MCRYPT_RIJNDAEL_256' in /home/y2mart/public_html/vendor/magento/framework/Encryption/Encryptor.php on line 394 in /home/y2mart/public_html/vendor/magento/framework/App/ErrorHandler.php:61 Stack trace: #0 /home/y2mart/public_html/vendor/magento/framework/Encryption/Encryptor.php(394): Magento\Framework\App\ErrorHandler->handler(8, 'Use of undefine...', '/home/y2mart/pu...', 394, Array) #1 /home/y2mart/public_html/vendor/magento/framework/Encryption/Encryptor.php(313): Magento\Framework\Encryption\Encryptor->getCrypt('616649e5d2cb64f...', 2, 'nNsh1N2B6L9zb7I...') #2 /home/y2mart/public_html/vendor/magento/framework/Serialize/Serializer/Sensitive.php(59): Magento\Framework\Encryption\Encryptor->decrypt('RYBT2ouem6p/vnh...') #3 /home/y2mart/public_html/vendor/magento/module-config/App/Config/Type/System.php(235): Magento\Framework\Serialize\Serializer\Sensitive->unserialize('0:2:nNsh1N2B6L9...') #4 /home/y2mart/public_html/vendor/magento/module-config/App/Config/Type/System.php(171): Magento\Config\App\Config\Type\System->loadScopeData('stores', 'default') #5 /home/y2mart/public_html/vendor/magento/framework/App/Config.php(131): Magento\Config\App\Config\Type\System->get('stores/default/...') #6 /home/y2mart/public_html/vendor/magento/framework/App/Config.php(80): Magento\Framework\App\Config->get('system', 'stores/default/...') #7 /home/y2mart/public_html/vendor/magento/module-developer/Model/Logger/Handler/Debug.php(63): Magento\Framework\App\Config->getValue('dev/debug/debug...', 'stores') #8 /home/y2mart/public_html/vendor/monolog/monolog/src/Monolog/Handler/AbstractProcessingHandler.php(29): Magento\Developer\Model\Logger\Handler\Debug->isHandling(Array) #9 /home/y2mart/public_html/vendor/monolog/monolog/src/Monolog/Logger.php(337): Monolog\Handler\AbstractProcessingHandler->handle(Array) #10 /home/y2mart/public_html/vendor/magento/framework/Logger/Monolog.php(48): Monolog\Logger->addRecord(400, 'Notice: Use of ...', Array) #11 /home/y2mart/public_html/vendor/monolog/monolog/src/Monolog/Logger.php(616): Magento\Framework\Logger\Monolog->addRecord(400, 'Notice: Use of ...', Array) #12 /home/y2mart/public_html/vendor/magento/framework/App/Bootstrap.php(262): Monolog\Logger->error('Notice: Use of ...') #13 /home/y2mart/public_html/index.php(39): Magento\Framework\App\Bootstrap->run(Object(Magento\Framework\App\Http\Interceptor)) #14 {main}