fix null guards

Core/Generators/BotEquipmentModGenerator.cs

@@ -775,11 +775,11 @@ public class BotEquipmentModGenerator
             case "patron_in_weapon":
             case "patron_in_weapon_000":
             case "patron_in_weapon_001":
-                return parentTemplate.Properties.Chambers.FirstOrDefault((chamber) => chamber.Name.Contains(modSlotLower));
+                return parentTemplate?.Properties?.Chambers?.FirstOrDefault((chamber) => chamber.Name.Contains(modSlotLower));
             case "cartridges":
-                return parentTemplate.Properties.Cartridges.FirstOrDefault((c) => c.Name.ToLower() == modSlotLower);
+                return parentTemplate?.Properties?.Cartridges?.FirstOrDefault((c) => c.Name?.ToLower() == modSlotLower);
             default:
-                return parentTemplate.Properties.Slots.FirstOrDefault((s) => s.Name.ToLower() == modSlotLower);
+                return parentTemplate?.Properties?.Slots?.FirstOrDefault((s) => s.Name?.ToLower() == modSlotLower);
         }
     }
 

Core/Generators/BotWeaponGenerator.cs

@@ -224,8 +224,9 @@ public class BotWeaponGenerator
             );
         }
 
+        var tempList = _cloner.Clone(weaponWithModsArray.Where((item) => item.SlotId == _modMagazineSlotId));
         // Fill existing magazines to full and sync ammo type
-        foreach (var magazine in weaponWithModsArray.Where((item) => item.SlotId == _modMagazineSlotId))
+        foreach (var magazine in tempList)
         {
             FillExistingMagazines(weaponWithModsArray, magazine, ammoTpl);
         }