Exception: Warning: Use of undefined constant MCRYPT_RIJNDAEL_256 - assumed 'MCRYPT_RIJNDAEL_256' (this will throw an Error in a future version of PHP) in /var/www/html/vendor/magento/framework/Encryption/Encryptor.php on line 394 in /var/www/html/vendor/magento/framework/App/ErrorHandler.php:61 Stack trace: #0 /var/www/html/vendor/magento/framework/Encryption/Encryptor.php(394): Magento\Framework\App\ErrorHandler->handler(2, 'Use of undefine...', '/var/www/html/v...', 394, Array) #1 /var/www/html/vendor/magento/framework/Encryption/Encryptor.php(313): Magento\Framework\Encryption\Encryptor->getCrypt('18edcae26f8f024...', 2, 'UnnjjECfzGMjXc8...') #2 /var/www/html/vendor/magento/framework/Serialize/Serializer/Sensitive.php(59): Magento\Framework\Encryption\Encryptor->decrypt('BXuG0b8YJh4liPu...') #3 /var/www/html/vendor/magento/module-config/App/Config/Type/System.php(297): Magento\Framework\Serialize\Serializer\Sensitive->unserialize('0:2:UnnjjECfzGM...') #4 /var/www/html/vendor/magento/module-config/App/Config/Type/System.php(236): Magento\Config\App\Config\Type\System->Magento\Config\App\Config\Type\{closure}() #5 /var/www/html/vendor/magento/module-config/App/Config/Type/System.php(298): Magento\Config\App\Config\Type\System->lockedLoadData(Object(Closure)) #6 /var/www/html/vendor/magento/module-config/App/Config/Type/System.php(206): Magento\Config\App\Config\Type\System->loadDefaultScopeData('default') #7 /var/www/html/vendor/magento/module-config/App/Config/Type/System.php(180): Magento\Config\App\Config\Type\System->getWithParts('default/newreli...') #8 /var/www/html/vendor/magento/framework/App/Config.php(131): Magento\Config\App\Config\Type\System->get('default/newreli...') #9 /var/www/html/generated/code/Magento/Framework/App/Config/Interceptor.php(63): Magento\Framework\App\Config->get('system', 'default/newreli...', NULL) #10 /var/www/html/vendor/magento/framework/App/Config.php(80): Magento\Framework\App\Config\Interceptor->get('system', 'default/newreli...') #11 /var/www/html/generated/code/Magento/Framework/App/Config/Interceptor.php(24): Magento\Framework\App\Config->getValue('newrelicreporti...', 'default', NULL) #12 /var/www/html/vendor/magento/module-new-relic-reporting/Model/Config.php(94): Magento\Framework\App\Config\Interceptor->getValue('newrelicreporti...') #13 /var/www/html/vendor/magento/module-new-relic-reporting/Plugin/HttpPlugin.php(49): Magento\NewRelicReporting\Model\Config->isNewRelicEnabled() #14 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(121): Magento\NewRelicReporting\Plugin\HttpPlugin->beforeCatchException(Object(Magento\Framework\App\Http\Interceptor), Object(Magento\Framework\App\Bootstrap), Object(Exception)) #15 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\App\Http\Interceptor->Magento\Framework\Interception\{closure}(Object(Magento\Framework\App\Bootstrap), Object(Exception)) #16 /var/www/html/generated/code/Magento/Framework/App/Http/Interceptor.php(39): Magento\Framework\App\Http\Interceptor->___callPlugins('catchException', Array, Array) #17 /var/www/html/vendor/magento/framework/App/Bootstrap.php(263): Magento\Framework\App\Http\Interceptor->catchException(Object(Magento\Framework\App\Bootstrap), Object(Exception)) #18 /var/www/html/index.php(39): Magento\Framework\App\Bootstrap->run(Object(Magento\Framework\App\Http\Interceptor)) #19 {main}