Board Thread:LotR Mod Technical Support/@comment-2001:1970:5A9D:5400:0:0:0:B98C-20191020234533/@comment-27219153-20191024015556

KCauldron and LOTR structure generation don't play nice together. If this is the same crash you always get, then there's not much you can do except reboot the server when it happens, unless you switch to forge.

Based on your list of plugins (WorldEdit, Announcement, DragonRename, Essentials, EssentialsSpawn, GroupManager, EssentialsChat, WorldGuard), I would recommend switching to forge since you don't really have anything unique.

WorldEdit - Forge Mod version available

Announcement - Probably vanilla unless there's some fancy formatting

Essentials, EssentialsSpawn, GroupManager, EssentialsChat, WorldGuard - Forge Essentials covers all of this

DragonRename - Forge Essentials can do basic renames, for more advanced stuff, check out Description tags