BlueMap-1.1.0-snap-cli.jar
paper 1.16.3

I am using:
no mods, no resource packs completely vanilla

If drive location becomes completely filled while in the middle of a render tiles will become corrupted and attempting to use -f to redo the render will result in the chunks staying corrupted

simply allow the drive to become filled along with a health amount of negligence and the chunks that should be fixed are stuck corrupted

unfortunate I do not have a crash log but all of the tiles corrupted tiles are cut off resulting in SyntaxError: JSON.parse: unexpected end of data at line 1 column 3944922 of the JSON data or error similar to it also here is a JSON file for reference
z0.tar.gz

I think that if all of the files could be checked to see if they are corrupted (ex check if the file is cut short), update rmstate, and then delete them

this has resulted from an error with the starting point of the render and is caused by me being unable to see where it starts although this may be an issue of it's own.