Refactoring the code !!

[parth-vedaha]

I have changed some code for refactoring the codebase.

1. Changes the variable name for the meaningful name.
2. Change the extract method.
3. Add one extract class for the error handling which will be more useful when we expand the project, it also helps for the reusability of code.
4. I have also pulled up a method for the refactoring purpose.
5. I have also transferred/moved the method.