Attempt to de reference a null object Salesforce Exception

Salesforce Exception "System.NullPointerException: Attempt to de-reference a null object" is thrown when the Apex Code is trying to use/utilise an object that has not been instantiated, or an object's attribute that has not been initialised. Blog Post: https://www.infallibletechie.com/2022/10/attempt-to-de-reference-a-null-object-salesforce-exception.html