Fatal error: Uncaught Error: Cannot instantiate interface Amasty\PageSpeedOptimizer\Model\Output\OutputChainInterface in /opt/bitnami/apps/magento/htdocs/vendor/magento/framework/ObjectManager/Factory/Dynamic/Developer.php:50 Stack trace: #0 /opt/bitnami/apps/magento/htdocs/vendor/magento/framework/ObjectManager/ObjectManager.php(70): Magento\Framework\ObjectManager\Factory\Dynamic\Developer->create('Amasty\\PageSpee...') #1 /opt/bitnami/apps/magento/htdocs/vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php(160): Magento\Framework\ObjectManager\ObjectManager->get('Amasty\\PageSpee...') #2 /opt/bitnami/apps/magento/htdocs/vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php(246): Magento\Framework\ObjectManager\Factory\AbstractFactory->resolveArgument(Array, 'Amasty\\PageSpee...', NULL, 'outputChain', 'Amasty\\PageSpee...') #3 /opt/bitnami/apps/magento/htdocs/vendor/magento/framework/ObjectManager/Factory/Dynamic/Developer.php(34): Magento\Framework\ObjectManager\Factory\AbstractFactory->resol in /opt/bitnami/apps/magento/htdocs/vendor/magento/framework/ObjectManager/Factory/Dynamic/Developer.php on line 50