Error message not descriptive

[C-Zekeri]

Error message should provide more information to user, so they can have an idea of what could possibly have gone wrong.

Example: User not found. Check if you:
a. Include the @ symbol
b. Inputted the correct username
etc.

I would like to work on this, if you're open to that.

[APratham]

Similar to #20 and currently considered as a feature request for a future version