新規のプレイヤーが参加した場合にエラーが起こる模様です
[Server thread/CRITICAL]: ErrorException: "Trying to access array offset on value of type bool" (EXCEPTION) in "plugins/MiningLevelSystem/src/Deceitya/MiningLevel/Database/SQLiteDatabase" at line 58
[20:00:08] [Server thread/CRITICAL]: #0 plugins/MiningLevelSystem/src/Deceitya/MiningLevel/Database/SQLiteDatabase(58): pocketmine\utils\Utils::errorExceptionHandler(integer 8, string[51] Trying to access array offset on value of type bool, string[175] C:\Users\yuiful\vmlogs\OneDrive\..................\Minecraft Server\Minecraft Pock, integer 58, array[3])
[20:00:08] [Server thread/CRITICAL]: #1 plugins/MiningLevelSystem/src/Deceitya/MiningLevel/MiningLevelAPI(71): Deceitya\MiningLevel\Database\SQLiteDatabase->getLevel(string[10] yuiful7772)
[20:00:08] [Server thread/CRITICAL]: #2 plugins/MiningLevelSystem/src/Deceitya/MiningLevel/MiningLevelAPI(60): Deceitya\MiningLevel\MiningLevelAPI->getLevel(string[10] yuiful7772)
[20:00:08] [Server thread/CRITICAL]: #3 plugins/MiningLevelSystem/src/Deceitya/MiningLevel/Event/EventListener(28): Deceitya\MiningLevel\MiningLevelAPI->playerDataExists(object pocketmine\Player)
[20:00:08] [Server thread/CRITICAL]: #4 pmsrc/src/pocketmine/plugin/MethodEventExecutor(42): Deceitya\MiningLevel\Event\EventListener->onPlayerJoin(object pocketmine\event\player\PlayerJoinEvent)
[20:00:08] [Server thread/CRITICAL]: #5 pmsrc/src/pocketmine/plugin/RegisteredListener(80): pocketmine\plugin\MethodEventExecutor->execute(object Deceitya\MiningLevel\Event\EventListener, object pocketmine\event\player\PlayerJoinEvent)
[20:00:08] [Server thread/CRITICAL]: #6 pmsrc/src/pocketmine/event/Event(88): pocketmine\plugin\RegisteredListener->callEvent(object pocketmine\event\player\PlayerJoinEvent)
[20:00:08] [Server thread/CRITICAL]: #7 pmsrc/src/pocketmine/Player(1098): pocketmine\event\Event->call()
[20:00:08] [Server thread/CRITICAL]: #8 pmsrc/src/pocketmine/network/mcpe/PlayerNetworkSessionAdapter(310): pocketmine\Player->doFirstSpawn()
[20:00:08] [Server thread/CRITICAL]: #9 pmsrc/src/pocketmine/network/mcpe/protocol/SetLocalPlayerAsInitializedPacket(45): pocketmine\network\mcpe\PlayerNetworkSessionAdapter->handleSetLocalPlayerAsInitialized(object pocketmine\network\mcpe\protocol\SetLocalPlayerAsInitializedPacket)
[20:00:08] [Server thread/CRITICAL]: #10 pmsrc/src/pocketmine/network/mcpe/PlayerNetworkSessionAdapter(109): pocketmine\network\mcpe\protocol\SetLocalPlayerAsInitializedPacket->handle(object pocketmine\network\mcpe\PlayerNetworkSessionAdapter)
[20:00:08] [Server thread/CRITICAL]: #11 pmsrc/src/pocketmine/network/mcpe/protocol/BatchPacket(130): pocketmine\network\mcpe\PlayerNetworkSessionAdapter->handleDataPacket(object pocketmine\network\mcpe\protocol\SetLocalPlayerAsInitializedPacket)
[20:00:08] [Server thread/CRITICAL]: #12 pmsrc/src/pocketmine/network/mcpe/PlayerNetworkSessionAdapter(109): pocketmine\network\mcpe\protocol\BatchPacket->handle(object pocketmine\network\mcpe\PlayerNetworkSessionAdapter)
[20:00:08] [Server thread/CRITICAL]: #13 pmsrc/src/pocketmine/Player(3311): pocketmine\network\mcpe\PlayerNetworkSessionAdapter->handleDataPacket(object pocketmine\network\mcpe\protocol\BatchPacket)
[20:00:08] [Server thread/CRITICAL]: #14 pmsrc/src/pocketmine/network/mcpe/RakLibInterface(169): pocketmine\Player->handleDataPacket(object pocketmine\network\mcpe\protocol\BatchPacket)
[20:00:08] [Server thread/CRITICAL]: #15 pmsrc/vendor/pocketmine/raklib/src/server/ServerHandler(95): pocketmine\network\mcpe\RakLibInterface->handleEncapsulated(string[18] 192.168.1.33 62027, object raklib\protocol\EncapsulatedPacket, integer 0)
[20:00:08] [Server thread/CRITICAL]: #16 pmsrc/src/pocketmine/network/mcpe/RakLibInterface(109): raklib\server\ServerHandler->handlePacket()
[20:00:08] [Server thread/CRITICAL]: #17 pmsrc/src/pocketmine/network/mcpe/RakLibInterface(99): pocketmine\network\mcpe\RakLibInterface->process()
[20:00:08] [Server thread/CRITICAL]: #18 pmsrc/vendor/pocketmine/snooze/src/SleeperHandler(113): pocketmine\network\mcpe\RakLibInterface->pocketmine\network\mcpe\{closure}()
[20:00:08] [Server thread/CRITICAL]: #19 pmsrc/vendor/pocketmine/snooze/src/SleeperHandler(75): pocketmine\snooze\SleeperHandler->processNotifications()
[20:00:08] [Server thread/CRITICAL]: #20 pmsrc/src/pocketmine/Server(2155): pocketmine\snooze\SleeperHandler->sleepUntil(double 1621944008.2065)
[20:00:08] [Server thread/CRITICAL]: #21 pmsrc/src/pocketmine/Server(1992): pocketmine\Server->tickProcessor()
[20:00:08] [Server thread/CRITICAL]: #22 pmsrc/src/pocketmine/Server(1586): pocketmine\Server->start()
[20:00:08] [Server thread/CRITICAL]: #23 pmsrc/src/pocketmine/PocketMine(291): pocketmine\Server->__construct(object BaseClassLoader, object pocketmine\utils\MainLogger, string[97] C:\Users\yuiful\vmlogs\OneDrive\..................\Minecraft Server\Minecraft Pock, string[105] C:\Users\yuiful\vmlogs\OneDrive\..................\Minecraft Server\Minecraft Pock)
[20:00:08] [Server thread/CRITICAL]: #24 pmsrc/src/pocketmine/PocketMine(321): pocketmine\server()
[20:00:08] [Server thread/CRITICAL]: #25 pmsrc(11): require(string[152] phar://C:/Users/yuiful/vmlogs/OneDrive/................../Minecraft Server/Minecra)
databaseのgetLevel()で存在しない配列の値を指定しているためのエラーみたいです