Context

• DeadChest
• 4.16.1
• 1.20.1
• Paper

Describe the bug
In the plugin's config.yml file, it's possible to exclude items from DeadChest, but it doesn't work.

To Reproduce
1- add an item in the ExcludedItems section (minecraft:dropper)
2- perform the /dc reload command
3- kill a player to see the result

I just tried, you need to set DROPPER instead of minecraft:dropper and it will works fine