The 404 Page Not Found error creates a poor impression of your magento store from the customer’s view, magento 2 allows you to create custom 404 page to add images, links, and descriptions as you need.
In this tutorial, learn How to Create Custom 404 Page in Magento 2
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For More Details: https://magecomp.com/blog/create-cus...-in-magento-2/
