Fatal error: Uncaught Error: Class 'Richardson\VolumeDiscount\Model\Quote\Discount' not found in /var/www/html/m2/vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php:121
Stack trace:
#0 /var/www/html/m2/vendor/magento/framework/ObjectManager/Factory/Compiled.php(108): Magento\Framework\ObjectManager\Factory\AbstractFactory->createObject('Richardson\\Volu...', Array)
#1 /var/www/html/m2/vendor/magento/framework/ObjectManager/ObjectManager.php(56): Magento\Framework\ObjectManager\Factory\Compiled->create('Richardson\\Volu...', Array)
#2 /var/www/html/m2/vendor/magento/module-quote/Model/Quote/Address/TotalFactory.php(40): Magento\Framework\ObjectManager\ObjectManager->create('Richardson\\Volu...', Array)
#3 /var/www/html/m2/vendor/magento/module-quote/Model/Quote/Address/Total/Collector.php(125): Magento\Quote\Model\Quote\Address\TotalFactory->create('Richardson\\Volu...')
#4 /var/www/html/m2/vendor/magento/module-sales/Model/Config/Ordered.php(114): Magento\Quote\Model\Quote\Address\Total\Collector->_initMod in /var/www/html/m2/vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php on line 121