handle droptable possibly missing in ExportRewards

src/services/missionInventoryUpdateService.ts

@@ -722,6 +722,7 @@ export const addFixedLevelRewards = (
         }
     }
     if (rewards.droptable) {
+        if (rewards.droptable in ExportRewards) {
             logger.debug(`rolling ${rewards.droptable} for level key rewards`);
             const reward = getRandomRewardByChance(ExportRewards[rewards.droptable][0]);
             if (reward) {
@@ -730,6 +731,9 @@ export const addFixedLevelRewards = (
                     ItemCount: reward.itemCount
                 });
             }
+        } else {
+            logger.error(`unknown droptable ${rewards.droptable}`);
+        }
     }
     return missionBonusCredits;
 };