You can not include characters that aren't letters, numbers, or regular symbols on your keyboard. Unallowed characters include those such as a Tab, Carriage Return, and Line Feed among others. Stick with the standard A-Z, a-z 0-9, and regular symbols on your keyboard.
Your password contains a non printing character. This most likely happens if you are copying/pasting your password from another program and accidentally selected a part of the whitespace. Try typing in your password directly into the field.