How to fix Magento Upgrade error Cannot instantiate interface while running CLI command?

Recently I have just upgraded Magento to the latest version 2.4.5.

After completing the upgrade successfully and when I try to run the CLI command it will throw an error.

Cannot instantiate interface Klevu\Search\Api\Service\Catalog\Product\StockServiceInterface#0 /var/www/html/vendor/magento/framework/ObjectManager/ObjectManager.php(70): Magento\Framework\ObjectManager\Factory\Dynamic\Developer->create('Klevu\\Search\\Ap...')
#1 /var/www/html/vendor/klevu/module-productsearch/Helper/Stock.php(29): Magento\Framework\ObjectManager\ObjectManager->get('Klevu\\Search\\Ap...')

In My case, I have enabled the Redis session and that will cause the issue.

How to fix the post-upgrade issue so we can run the Magento command successfully?

You just need to flush all the Redis sessions. you need to command to flush the Redis cache. If you are not able to run the command you need to ask your DevOps team to flush the Redis cache.

If you are using warden for the development, you can flush the session using the given command

warden redis flushall

The output will be OK.

Now you can able to run any Magento command like,

php bin/magento cache:flush
php bin/magento setup:upgrade
php bin/magento setup:di:compile

If you are facing a Temando shipping Module error after the upgrade, Temando module Cannot instantiate interface