Minecraft 1.13+ worlds. Chunks from before the release (even from 1.13 snapshots) will be ignored. Please optimize your worlds in Minecraft before rendering them (or use other map viewer, like TMCMR).

Swedish video game developer Mojang Studios has released an emergency Minecraft security update to address a critical bug in the Apache Log4j Java logging library used by the game's Java Edition ...

Exploit code has been released for a serious code-execution vulnerability in Log4j, an open source logging utility that’s used in countless apps, including those used by large enterprise organizations ...