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 /customers/0/2/e/construction-build.co.uk/httpd.www/vendor/magento/framework/Encryption/Encryptor.php on line 394 in /customers/0/2/e/construction-build.co.uk/httpd.www/vendor/magento/framework/App/ErrorHandler.php:61 Stack trace: #0 /customers/0/2/e/construction-build.co.uk/httpd.www/vendor/magento/framework/Encryption/Encryptor.php(394): Magento\Framework\App\ErrorHandler->handler(2, 'Use of undefine...', '/customers/0/2/...', 394, Array) #1 /customers/0/2/e/construction-build.co.uk/httpd.www/vendor/magento/framework/Encryption/Encryptor.php(313): Magento\Framework\Encryption\Encryptor->getCrypt('9f131ca43221b71...', 2, 'pyhVYxcPN4NgfEH...') #2 /customers/0/2/e/construction-build.co.uk/httpd.www/vendor/magento/framework/Serialize/Serializer/Sensitive.php(59): Magento\Framework\Encryption\Encryptor->decrypt('FqqdbYKgdgV41PQ...') #3 /customers/0/2/e/construction-build.co.uk/httpd.www/vendor/magento/module-config/App/Config/Type/System.php(235): Magento\Framework\Serialize\Serializer\Sensitive->unserialize('0:2:pyhVYxcPN4N...') #4 /customers/0/2/e/construction-build.co.uk/httpd.www/vendor/magento/module-config/App/Config/Type/System.php(171): Magento\Config\App\Config\Type\System->loadScopeData('stores', 'default') #5 /customers/0/2/e/construction-build.co.uk/httpd.www/vendor/magento/framework/App/Config.php(131): Magento\Config\App\Config\Type\System->get('stores/default/...') #6 /customers/0/2/e/construction-build.co.uk/httpd.www/vendor/magento/framework/App/Config.php(80): Magento\Framework\App\Config->get('system', 'stores/default/...') #7 /customers/0/2/e/construction-build.co.uk/httpd.www/vendor/magento/module-developer/Model/Logger/Handler/Debug.php(63): Magento\Framework\App\Config->getValue('dev/debug/debug...', 'stores') #8 /customers/0/2/e/construction-build.co.uk/httpd.www/vendor/monolog/monolog/src/Monolog/Handler/AbstractProcessingHandler.php(29): Magento\Developer\Model\Logger\Handler\Debug->isHandling(Array) #9 /customers/0/2/e/construction-build.co.uk/httpd.www/vendor/monolog/monolog/src/Monolog/Logger.php(337): Monolog\Handler\AbstractProcessingHandler->handle(Array) #10 /customers/0/2/e/construction-build.co.uk/httpd.www/vendor/magento/framework/Logger/Monolog.php(48): Monolog\Logger->addRecord(400, 'Warning: Use of...', Array) #11 /customers/0/2/e/construction-build.co.uk/httpd.www/vendor/monolog/monolog/src/Monolog/Logger.php(616): Magento\Framework\Logger\Monolog->addRecord(400, 'Warning: Use of...', Array) #12 /customers/0/2/e/construction-build.co.uk/httpd.www/vendor/magento/framework/App/Bootstrap.php(262): Monolog\Logger->error('Warning: Use of...') #13 /customers/0/2/e/construction-build.co.uk/httpd.www/index.php(40): Magento\Framework\App\Bootstrap->run(Object(Magento\Framework\App\Http\Interceptor)) #14 {main}