Please dont download snapshots of this plugin cause there will be always an error the "EDIT CRATE WINNINGS" button doent work due to downloading a snapshot. please download a normal version instead.
OK I have looked at them all most of them are out dated but I found 2 that works on 1.14! https://dev.bukkit.org/projects/slimescrap/files https://dev.bukkit.org/projects/soul-shards
Hopefully more will be updated