[16:21:06] [Server thread/WARN]: [CreeperHeal] Error detected, please report the whole message
[16:21:06] [Server thread/WARN]: [CreeperHeal] ClassCastException when replacing a chest :
[16:21:06] [Server thread/WARN]: [CreeperHeal] org.bukkit.craftbukkit.v1_11_R1.block.CraftBlock
[16:21:06] [Server thread/WARN]: [CreeperHeal] AIR at 364; 71; -333
[16:21:06] [Server thread/WARN]: java.lang.ClassCastException: org.bukkit.craftbukkit.v1_11_R1.block.CraftBlockState cannot be cast to org.bukkit.inventory.InventoryHolder