Project 2 Testing

 1)
                
        

 2)
                
                


                This error comes when trying to add a new username to the database. The app will handle this error by stoppingthe process of the application
                and showing where the error occurs. This error happens because we declared the username object in the database to take strings as an argument.
                To make this error, I made a reference to the user input for the username and declared the input as a string. Despite declaring the input as a
                string, the reference is still declared as a undefined argument causing the error to occur.