Crash

[ipad54]

[09:22:35.915] [Server thread/CRITICAL]: pocketmine\world\WorldException: "Terrain is locked for generation/population" (EXCEPTION) in "src/world/World" at line 1412
[09:22:35.916] [Server thread/CRITICAL]: #0 src/world/BlockTransaction(99): pocketmine\world\World->setBlockAt(integer 360, integer 64, integer 246, object pocketmine\block\CoralBlock)
[09:22:35.916] [Server thread/CRITICAL]: #1 src/world/World(1681): pocketmine\world\BlockTransaction->apply()
[09:22:35.916] [Server thread/CRITICAL]: #2 src/player/Player(1667): pocketmine\world\World->useItemOn(object pocketmine\math\Vector3, object pocketmine\item\ItemBlock, integer 1, object pocketmine\math\Vector3, object pocketmine\player\Player, boolean 1)
[09:22:35.916] [Server thread/CRITICAL]: #3 src/network/mcpe/handler/InGamePacketHandler(339): pocketmine\player\Player->interactBlock(object pocketmine\math\Vector3, integer 1, object pocketmine\math\Vector3)
[09:22:35.916] [Server thread/CRITICAL]: #4 src/network/mcpe/handler/InGamePacketHandler(202): pocketmine\network\mcpe\handler\InGamePacketHandler->handleUseItemTransaction(object pocketmine\network\mcpe\protocol\types\inventory\UseItemTransactionData)
[09:22:35.917] [Server thread/CRITICAL]: #5 src/network/mcpe/protocol/InventoryTransactionPacket(112): pocketmine\network\mcpe\handler\InGamePacketHandler->handleInventoryTransaction(object pocketmine\network\mcpe\protocol\InventoryTransactionPacket)
[09:22:35.917] [Server thread/CRITICAL]: #6 src/network/mcpe/NetworkSession(377): pocketmine\network\mcpe\protocol\InventoryTransactionPacket->handle(object pocketmine\network\mcpe\handler\InGamePacketHandler)
[09:22:35.917] [Server thread/CRITICAL]: #7 src/network/mcpe/NetworkSession(336): pocketmine\network\mcpe\NetworkSession->handleDataPacket(object pocketmine\network\mcpe\protocol\InventoryTransactionPacket)
[09:22:35.917] [Server thread/CRITICAL]: #8 src/network/mcpe/raklib/RakLibInterface(178): pocketmine\network\mcpe\NetworkSession->handleEncoded(string[81] c.abd.b}9.&......o........<..s.;..Op.}...a..;...{..D......-@i...........K<9.@...)
[09:22:35.917] [Server thread/CRITICAL]: #9 vendor/pocketmine/raklib/src/server/ipc/RakLibToUserThreadMessageReceiver(43): pocketmine\network\mcpe\raklib\RakLibInterface->handleEncapsulated(integer 0, string[90] .G...].....g%..N.......k..Y...&U..>...ep.hYM...WlZ..^"....l......v...~?c.......?)
[09:22:35.917] [Server thread/CRITICAL]: #10 src/network/mcpe/raklib/RakLibInterface(113): raklib\server\ipc\RakLibToUserThreadMessageReceiver->handle(object pocketmine\network\mcpe\raklib\RakLibInterface)
[09:22:35.917] [Server thread/CRITICAL]: #11 vendor/pocketmine/snooze/src/SleeperHandler(123): pocketmine\network\mcpe\raklib\RakLibInterface->pocketmine\network\mcpe\raklib{closure}()
[09:22:35.917] [Server thread/CRITICAL]: #12 vendor/pocketmine/snooze/src/SleeperHandler(85): pocketmine\snooze\SleeperHandler->processNotifications()
[09:22:35.918] [Server thread/CRITICAL]: #13 src/Server(1523): pocketmine\snooze\SleeperHandler->sleepUntil(double 1605680555.9264)
[09:22:35.918] [Server thread/CRITICAL]: #14 src/Server(1076): pocketmine\Server->tickProcessor()
[09:22:35.918] [Server thread/CRITICAL]: #15 src/PocketMine(246): pocketmine\Server->__construct(object BaseClassLoader, object pocketmine\utils\MainLogger, string[21] /root/PocketMine-MP4/, string[29] /root/PocketMine-MP4/plugins/)
[09:22:35.919] [Server thread/CRITICAL]: #16 src/PocketMine(271): pocketmine\server()

[Muqsit]

This isn't a bug with VanillaGenerator