Entries this day: keyerror-blocks-when-importing-minecraft-into-minetest

keyerror blocks when importing minecraft into minetest

(written 09:29 Friday 18 February 2022 JST)

I'm including the warning lines below as placeholders to say the import process passed its initial checks and then crashed after a few minutes.

WARNING:block:Unknown Minecraft Block:216:4
WARNING:block:Unknown Minecraft Block:216:4
WARNING:block:Unknown Minecraft Block:216:4
WARNING:block:Unknown Minecraft Block:216:4
Traceback (most recent call last):A 2:05:40 h:m:s
  File "mcimport.py", line 107, in 
    mtmap.save()
  File "/home/thunderrabbit/minetest/2022feb18minecraft/mcimport/block.py", line 455, in save
    for block in self.blocks:
  File "/home/thunderrabbit/minetest/2022feb18minecraft/mcimport/block.py", line 439, in fromMCMapBlocksIterator
    for mcblock in mcmap.getBlocksIterator():
  File "/home/thunderrabbit/minetest/2022feb18minecraft/mcimport/block.py", line 62, in getBlocksIterator
    blocks = self.getChunk(chkx, chkz).blocks
  File "/home/thunderrabbit/minetest/2022feb18minecraft/mcimport/block.py", line 45, in getChunk
    return MCChunk(chkx, chkz, self.world_path, self.ext)
  File "/home/thunderrabbit/minetest/2022feb18minecraft/mcimport/block.py", line 91, in __init__
    self.blocks.append(MCBlock(raw_data, (chkx, chkz), section["Y"], True))
  File "/home/thunderrabbit/minetest/2022feb18minecraft/mcimport/block.py", line 108, in __init__
    self.from_section(section)
  File "/home/thunderrabbit/minetest/2022feb18minecraft/mcimport/block.py", line 174, in from_section
    self.blocks = self.reverse_X_axis(section["Blocks"])
KeyError: 'Blocks'

I tracked down the line and added some print statements to prove that it visited the same, ahem, blocks of code maybe a thousand times before crashing with KeyError: 'Blocks'