Some ruin structure files throw java.io.FileNotFoundExceptinons

The bug

I found out a bug when generating trees (MC-129738, already reported by someone) and to check, if there are any errors in the logs, I found out that some ruin structure files are missing.

Log info:

In text form:

[20:21:31] [WorldGen-Worker-16/ERROR]: Couldn't load structure minecraft:ruin/big_brick_1: java.io.FileNotFoundException: minecraft:structures/ruin/big_brick_1.nbt
[20:21:31] [WorldGen-Worker-16/ERROR]: Couldn't load structure minecraft:ruin/big_cracked_1: java.io.FileNotFoundException: minecraft:structures/ruin/big_cracked_1.nbt
[20:21:31] [WorldGen-Worker-16/ERROR]: Couldn't load structure minecraft:ruin/big_mossy_1: java.io.FileNotFoundException: minecraft:structures/ruin/big_mossy_1.nbt

If you need a seed for recreation, it's 4566936303172969989.