fix registration issues

tournaments/views.py

@@ -653,8 +653,8 @@ def register_tournament(request, tournament_id):
                     })
                 elif add_player_form.names_is_valid():
                     if player_data.get('rank', None) is None:
-                        player_data['rank'] = request.session['last_rank']
-                        player_data['is_woman'] = request.session['is_woman']
+                        player_data['rank'] = request.session.get('last_rank', 0)
+                        player_data['is_woman'] = request.session.get('is_woman', False)
                     request.session['team_registration'].append(player_data)
                     if request.user.is_authenticated and request.user.licence_id is None:
                         request.session['user_without_licence'] = False