Minecraft wiki entry for debug, associated text: debug-report-yyyy-MM-dd_HH.mm.ss.zip
levels
minecraft or <other custom namespaces>
overworld or the_end or the_nether or <other custom dimensions>
block_entities.csv: Contains a list of block entities in the world in the format x,y,z,type.
chunks.csv: Contains a list of chunk information in the format x,z,level,in_memory,status,full_status,accessible_ready,ticking_ready,entity_ticking_ready,ticket,spawning,entity_count,block_entity_count.
entities.csv: Contains a list of entities in the world in the format x,y,z,uuid,type,alive,custom_name.
example_crash.txt: An example crash file.
stats.txt: Contains some stats.
classpath.txt: Contains the file paths of the external jars Minecraft uses.
example_crash.txt: An example crash file.
gamerules.txt: A plain text file containing a list of game rules and their values (<gamerule>=<value>).
stats.txt: Contains some stats.
threads.txt: All running threads.