GENERAL_ERROR_MESSAGE = "There is some error. Please try after some time."
UNAUTHORIZED_LOGIN_MESSAGE = "Please verify your email first!"
AUTHENTICATION_ERROR_MESSAGE = "Invalid email or password."
SUCCESSFUL_LOGIN_MESSAGE = "User logged in successfully !"
EMPTY_THUMBNAIL_ERROR_MESSAGE = "A thumbnail is required !" 
EMAIL_KEY = "email"
PASSWORD_KEY = "password"
EMPTY_STRING = ""