Pocketmine-mp: When the computer is forcibly shut down, levels becomes corrupted

[Yexeed]

Issue description

• Expected result: Levels not becomes corrupted (or some chunks gets corrupted), i can load server again with no crashes
• Actual result: Levels becomes corrupted, i can't load server again without crash

Steps to reproduce the issue

1. Load level (ex. default world)
2. Force your computer to shut down (not recommended)
3. After starting up, try to load server

OS and versions

• PocketMine-MP: 3.3.0 release
• PHP: 7.2.9
• Server OS: Windows 10 (1803)
• Game version: Win10 1.7.0

Plugins

• Empty

Crashdump, backtrace or other files

• I can't paste my crdump to crash.pmmp.io (teapot error), so i pasted it to hastebin: here

[dktapps]

What did you expect to happen? Would you be so blase about shutting your computer down forcibly during a system update?

[Yexeed]

my computer shut down because power failure in my house, so are there any ways to restore my world or it gets corrupted forever?

[dktapps]

Now you know why taking backups is recommended.

[95CivicSi]

Depending on what was happening when you lost power, you may be able to just recreate the level.dat file to get the world to load. Usually, even when you do this, there will be missing or corrupted chunks.

Good luck.