diff --git a/src/server/mod.rs b/src/server/mod.rs
index d03cc73..96e2e9d 100644
--- a/src/server/mod.rs
+++ b/src/server/mod.rs
@@ -1970,6 +1970,7 @@ impl Server {
         &mut self,
         chunk_data: packet::play::clientbound::ChunkData_AndLight,
     ) {
+println!("on_chunk_data_and_light chunk_data = {:?}", chunk_data);
         self.world
             .load_chunk117(
                 chunk_data.chunk_x,
diff --git a/src/world/mod.rs b/src/world/mod.rs
index 71e348e..b3b4464 100644
--- a/src/world/mod.rs
+++ b/src/world/mod.rs
@@ -1020,6 +1020,8 @@ impl World {
         use byteorder::ReadBytesExt;
         use std::io::Cursor;
 
+println!("load_chunk19_to_117 x={:?} z={:?}, new={:?} mask={:?} num_sections={:?} data={:?}", x,z,new,mask,num_sections,data);
+
         let mut data = Cursor::new(data);
 
         let cpos = CPos(x, z);
@@ -1047,10 +1049,12 @@ impl World {
 
                 if self.protocol_version >= 451 {
                     let _block_count = data.read_u16::<byteorder::LittleEndian>()?;
+println!("_block_count = {:?}", _block_count);
                     // TODO: use block_count
                 }
 
                 let mut bit_size = data.read_u8()?;
+println!("bit_size = {:?}", bit_size);
                 let mut mappings: HashMap<usize, block::Block, BuildHasherDefault<FNVHash>> =
                     HashMap::with_hasher(BuildHasherDefault::default());
                 if bit_size == 0 {