Update calc_reg_rating() in chess/models.py to look for self.reg_wins instead of self.wins since the attirbute names changed
Update calc_reg_rating() in chess/models.py to look for self.reg_draws and self.reg_losses since the attribute names were updated
Update profile.html template to access ratings via dot notation ({{ regular.rating }}) instead of dictionary notation ({{ regular['rating'] }}) since the latter was failing to load