[17:19:09 ERROR]: Block at 248, 59, 91 is Block{minecraft:dirt} but has net.mine
craft.server.v1_15_R1.TileEntityChest@3bc02b4. Bukkit will attempt to fix this,
but there may be additional damage that we cannot recover.
[17:19:09 ERROR]: Block at 249, 59, 91 is Block{minecraft:dirt} but has net.mine
craft.server.v1_15_R1.TileEntityChest@1ebe4f4b. Bukkit will attempt to fix this,
 but there may be additional damage that we cannot recover.
[17:19:09 ERROR]: Block at 248, 60, 91 is Block{minecraft:dirt} but has net.mine
craft.server.v1_15_R1.TileEntityHopper@2f813520. Bukkit will attempt to fix this
, but there may be additional damage that we cannot recover.