How to Fix “Uncaught Error: Class ‘Magento\Setup\Mvc\Bootstrap\InitParamListener’.

Hello, Magento Buddies,

Enhancing the store's performance and security is one of the main benefits of upgrading to the advanced version. Upgrades, however, can sometimes result in errors occurring. The solution to Uncaught Error is here to help you all. Deep dive into How to Fix “Uncaught Error: Class ‘Magento\Setup\Mvc\Bootstrap\InitParamListener’ not found” Error After Upgrading to Magento 2.4.x?

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Complete Tutorial on How to Fix “Uncaught Error: Class ‘Magento\Setup\Mvc\Bootstrap\InitParamListener’ not found” Error After Upgrading to Magento 2.4.x?