diff --git a/titles/sao/base.py b/titles/sao/base.py
index 16926d8..628478b 100644
--- a/titles/sao/base.py
+++ b/titles/sao/base.py
@@ -253,11 +253,19 @@ class SaoBase:
 
             if equipmentList:
                 equipment_data = self.game_data.item.get_user_equipment(req.user_id, x.user_common_reward_id)
+                if equipment_data is None:
+                    self.logger.error(f"Failed to find equipment {x.user_common_reward_id} for user {req.user_id}!")
+                    continue
+                
                 hero_exp = int(equipment_data["enhancement_exp"]) + int(synthesize_hero_log_data["log_exp"])
                 self.game_data.item.remove_equipment(req.user_id, x.user_common_reward_id)
 
             if heroList:
                 hero_data = self.game_data.item.get_hero_log(req.user_id, x.user_common_reward_id)
+                if hero_data is None:
+                    self.logger.error(f"Failed to find hero {x.user_common_reward_id} for user {req.user_id}!")
+                    continue
+                
                 hero_exp = int(hero_data["log_exp"]) + int(synthesize_hero_log_data["log_exp"])
                 self.game_data.item.remove_hero_log(req.user_id, x.user_common_reward_id)