World crash

[Atara6431]

Issue description

• when useing PM4, my_plot's world can't be load and cause the crash. PM4 use a new world format and can tanslate old world format like PM3, when i try to translate my_plot's world,there's the crash

crash

[23:03:43.903] [Server thread/CRITICAL]: pocketmine\world\format\io\exception\UnsupportedWorldFormatException: "World "home2" is in an unsupported format and needs to be upgraded" (EXCEPTION) in "pmsrc/src/world/WorldManager" at line 250
--- Stack trace ---
  #0 plugins/MeNpc_v1.0.0-MeMission-PM4.phar/src/MeKO/MeNpc/MeNpc(83): pocketmine\world\WorldManager->loadWorld(string[5] home2)
  #1 plugins/MeNpc_v1.0.0-MeMission-PM4.phar/src/MeKO/MeNpc/Task/MeTask(30): MeKO\MeNpc\MeNpc->check(string[12] ............)
  #2 pmsrc/src/scheduler/TaskHandler(117): MeKO\MeNpc\Task\MeTask->onRun()
  #3 pmsrc/src/scheduler/TaskScheduler(144): pocketmine\scheduler\TaskHandler->run()
  #4 pmsrc/src/plugin/PluginManager(478): pocketmine\scheduler\TaskScheduler->mainThreadHeartbeat(integer 1)
  #5 pmsrc/src/Server(1769): pocketmine\plugin\PluginManager->tickSchedulers(integer 1)
  #6 pmsrc/src/Server(1658): pocketmine\Server->tick()
  #7 pmsrc/src/Server(1047): pocketmine\Server->tickProcessor()
  #8 pmsrc/src/PocketMine(304): pocketmine\Server->__construct(object BaseClassLoader#2, object pocketmine\utils\MainLogger#3, string[45] C:\BaiduNetdiskDownload\19130...... - ......\, string[53] C:\BaiduNetdiskDownload\19130...... - ......\plugins\)
  #9 pmsrc/src/PocketMine(327): pocketmine\server()
  #10 pmsrc(11): require(string[89] phar://C:/BaiduNetdiskDownload/19130...... - ....../PocketMine-MP.phar/src/Pocke)
--- End of exception information ---
[23:03:43.903] [Server thread/EMERGENCY]: An unrecoverable error has occurred and the server has crashed. Creating a crash dump
[23:03:43.912] [Server thread/EMERGENCY]: Please upload the "C:/BaiduNetdiskDownload/19130附属 - 副本/crashdumps/Tue_Apr_19-23.03.43-AWST_2022.log" file to the Crash Archive and submit the link to the Bug Reporting page. Give as much info as you can.
[23:03:50.045] [Server thread/EMERGENCY]: The crash dump has been automatically submitted to the Crash Archive. You can view it on https://crash.pmmp.io/view/6473819 or use the ID #6473819.
[23:03:50.048] [Server thread/EMERGENCY]: Forcing server shutdown

[Atara6431]

one of my plugin use the world reated by my plot,so when sever start it will shut down beacause of this.

[jasonw4331]

This isn't a MyPlot bug according to that error message.