When playing the Lost Mine of Phandelver, our elf wizard levelled up to level 2 the session before, and we left it at that. But, in today's session, when we checked out her character sheet, there was just a constant levelling up bug. The player playing as the elf wizard has no memory of typing the XP wrong, but if she did, is there a way of manually stopping level up if you don't want it. Any help will be appreciated.