it doesn´t matter how long i look, i cannot find the error.   the log says: [Server thread/WARN] [minecraft/TileEntity]: Block entity invalid: minecraft:mob_spawner  but i dont find or remember writing mob_spawner i always wrote spawner.      Edit: ok the official tag is minecraft:mob_spawner and not spawner, but why is it gone? Edit2: ive now changed all minecraft:spawner to minecraft:mob_spawner. now i cannot pick up the "spawners"(prev. just blocks wi