open chest
chest crash server

try and break chest
crash server

try and delete chest (using /fill)
crash server

chest data (/data get):
[System] [CHAT] -781, 144, 876 has the following block data: {LootTable: "dungeons_arise:chests/small_blimp/small_blimp_treasure", x: -781, y: 144, z: 876, id: "minecraft:chest", LootTableSeed: 8085692306997627L}

log:
log.txt

i dont even know what's wrong, just that it's probably a cause of the other mods i have.
i dont need a solution, just an explanation btw.

thanks!