Issue saving world.

[RealTriassic]

2020-11-17 20:09:41.904 [main] INFO  - [RealTriassic: Saving...]
2020-11-17 20:09:42.050 [main] FATAL - Unhandled exception executing command "save-all" in save-all: cn.nukkit.utils.ChunkException: Error saving chunk (105, 21)
	at cn.nukkit.level.format.anvil.Anvil.saveChunk(Anvil.java:243)
	at cn.nukkit.level.format.generic.BaseLevelProvider.saveChunks(BaseLevelProvider.java:306)
	at cn.nukkit.level.Level.saveChunks(Level.java:1318)
	at cn.nukkit.level.Level.save(Level.java:1309)
	at cn.nukkit.command.defaults.SaveCommand.execute(SaveCommand.java:34)
	at cn.nukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:258)
	at cn.nukkit.Server.dispatchCommand(Server.java:962)
	at cn.nukkit.Player.handleDataPacket(Player.java:3060)
	at cz.creeperface.nukkit.gac.player.NukkitCheatPlayer.handleDataPacket(NukkitCheatPlayer.kt:74)
	at cn.nukkit.network.Network.lambda$processPackets$3(Network.java:285)
	at java.util.ArrayList.forEach(ArrayList.java:1259)
	at cn.nukkit.network.Network.processPackets(Network.java:283)
	at cn.nukkit.network.Network.processBatch(Network.java:269)
	at cn.nukkit.Player.handleDataPacket(Player.java:2303)
	at cz.creeperface.nukkit.gac.player.NukkitCheatPlayer.handleDataPacket(NukkitCheatPlayer.kt:74)
	at cn.nukkit.network.RakNetInterface.process(RakNetInterface.java:75)
	at cz.creeperface.nukkit.gac.V.process(GACNetworkInterface.kt)
	at cn.nukkit.network.Network.processInterfaces(Network.java:158)
	at cn.nukkit.Server.tick(Server.java:1361)
	at cn.nukkit.Server.tickProcessor(Server.java:1144)
	at cn.nukkit.Server.start(Server.java:1104)
	at cn.nukkit.Server.<init>(Server.java:760)
	at cn.nukkit.Nukkit.main(Nukkit.java:120)
Caused by: java.io.IOException: Negative seek offset
	at java.io.RandomAccessFile.seek(RandomAccessFile.java:555)
	at cn.nukkit.level.format.anvil.RegionLoader.saveChunk(RegionLoader.java:120)
	at cn.nukkit.level.format.anvil.RegionLoader.writeChunk(RegionLoader.java:153)
	at cn.nukkit.level.format.anvil.Anvil.saveChunk(Anvil.java:241)
	... 22 more

2020-11-17 20:09:42.050 [main] ERROR - Throwing
cn.nukkit.utils.ChunkException: Error saving chunk (105, 21)
	at cn.nukkit.level.format.anvil.Anvil.saveChunk(Anvil.java:243) ~[server.jar:?]
	at cn.nukkit.level.format.generic.BaseLevelProvider.saveChunks(BaseLevelProvider.java:306) ~[server.jar:?]
	at cn.nukkit.level.Level.saveChunks(Level.java:1318) ~[server.jar:?]
	at cn.nukkit.level.Level.save(Level.java:1309) ~[server.jar:?]
	at cn.nukkit.command.defaults.SaveCommand.execute(SaveCommand.java:34) ~[server.jar:?]
	at cn.nukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:258) ~[server.jar:?]
	at cn.nukkit.Server.dispatchCommand(Server.java:962) ~[server.jar:?]
	at cn.nukkit.Player.handleDataPacket(Player.java:3060) ~[server.jar:?]
	at cz.creeperface.nukkit.gac.player.NukkitCheatPlayer.handleDataPacket(NukkitCheatPlayer.kt:74) ~[?:?]
	at cn.nukkit.network.Network.lambda$processPackets$3(Network.java:285) ~[server.jar:?]
	at java.util.ArrayList.forEach(ArrayList.java:1259) [?:1.8.0_262]
	at cn.nukkit.network.Network.processPackets(Network.java:283) [server.jar:?]
	at cn.nukkit.network.Network.processBatch(Network.java:269) [server.jar:?]
	at cn.nukkit.Player.handleDataPacket(Player.java:2303) [server.jar:?]
	at cz.creeperface.nukkit.gac.player.NukkitCheatPlayer.handleDataPacket(NukkitCheatPlayer.kt:74) [GAC-1.0.jar:?]
	at cn.nukkit.network.RakNetInterface.process(RakNetInterface.java:75) [server.jar:?]
	at cz.creeperface.nukkit.gac.V.process(GACNetworkInterface.kt) [GAC-1.0.jar:?]
	at cn.nukkit.network.Network.processInterfaces(Network.java:158) [server.jar:?]
	at cn.nukkit.Server.tick(Server.java:1361) [server.jar:?]
	at cn.nukkit.Server.tickProcessor(Server.java:1144) [server.jar:?]
	at cn.nukkit.Server.start(Server.java:1104) [server.jar:?]
	at cn.nukkit.Server.<init>(Server.java:760) [server.jar:?]
	at cn.nukkit.Nukkit.main(Nukkit.java:120) [server.jar:?]
Caused by: java.io.IOException: Negative seek offset
	at java.io.RandomAccessFile.seek(RandomAccessFile.java:555) ~[?:1.8.0_262]
	at cn.nukkit.level.format.anvil.RegionLoader.saveChunk(RegionLoader.java:120) ~[server.jar:?]
	at cn.nukkit.level.format.anvil.RegionLoader.writeChunk(RegionLoader.java:153) ~[server.jar:?]
	at cn.nukkit.level.format.anvil.Anvil.saveChunk(Anvil.java:241) ~[server.jar:?]
	... 22 more

[powernukkit]

Hey @RealTriassic, thank you for the report!

⚠️ I could not find which PowerNukkit version you are using from your message. ⚠️

Please, run the command: /debugpaste it will generate a link, send us this link replying this issue.
It's an important step to get your issue resolved.

Don't say latest or current version, we support different versions and your latest may not be the same latest as our, and your latest will not be the same latest in the future, so please, use a fixed version.

Thank you 👍