how to fix error not drop item in chest

[sunlive]

How to fix an error that not drop item in chest, especially in Chaos Keys 1 2 3 4 5 6. I checked the drop rate of these items, and all total 100% for each one but it still doesn't drop any core sometimes. Please help me.

 

[Tryout]

How to fix an error that not drop item in chest, especially in Chaos Keys 1 2 3 4 5 6. I checked the drop rate of these items, and all total 100% for each one but it still doesn't drop any core sometimes. Please help me.

You must check if the said below ID is correct if you're using World_drop.scp and also check if it's enabled on your WorldSvr_xx_xx.ini

Terrain_World DungeonID