Internal Server Error with savelevel skywars command (using the dev version 24)

[Lojstr]

In the console:

[14:15:37] [Server thread/CRITICAL]: Error: "Call to a member function saveMap() on null" (EXCEPTION) in "plugins/SkyWars_dev-24.phar/src/vixikhd/skywars/SkyWars" at line 150

[14:15:37] [Server thread/DEBUG]: #0 src/pocketmine/plugin/MethodEventExecutor(38): vixikhd\skywars\SkyWars->onChat(object pocketmine\event\player\PlayerChatEvent)

[14:15:37] [Server thread/DEBUG]: #1 src/pocketmine/plugin/RegisteredListener(98): pocketmine\plugin\MethodEventExecutor->execute(object vixikhd\skywars\SkyWars, object pocketmine\event\player\PlayerChatEvent)

[14:15:37] [Server thread/DEBUG]: #2 src/pocketmine/event/Event(95): pocketmine\plugin\RegisteredListener->callEvent(object pocketmine\event\player\PlayerChatEvent)

[14:15:37] [Server thread/DEBUG]: #3 src/pocketmine/Player(2261): pocketmine\event\Event->call()

[14:15:37] [Server thread/DEBUG]: #4 src/pocketmine/network/mcpe/PlayerNetworkSessionAdapter(132): pocketmine\Player->chat(string[9] savelevel)

[14:15:37] [Server thread/DEBUG]: #5 src/pocketmine/network/mcpe/protocol/TextPacket(124): pocketmine\network\mcpe\PlayerNetworkSessionAdapter->handleText(object pocketmine\network\mcpe\protocol\TextPacket)

[14:15:37] [Server thread/DEBUG]: #6 src/pocketmine/network/mcpe/PlayerNetworkSessionAdapter(111): pocketmine\network\mcpe\protocol\TextPacket->handle(object pocketmine\network\mcpe\PlayerNetworkSessionAdapter)

[14:15:37] [Server thread/DEBUG]: #7 src/pocketmine/network/mcpe/protocol/BatchPacket(123): pocketmine\network\mcpe\PlayerNetworkSessionAdapter->handleDataPacket(object pocketmine\network\mcpe\protocol\TextPacket)

[14:15:37] [Server thread/DEBUG]: #8 src/pocketmine/network/mcpe/PlayerNetworkSessionAdapter(111): pocketmine\network\mcpe\protocol\BatchPacket->handle(object pocketmine\network\mcpe\PlayerNetworkSessionAdapter)

[14:15:37] [Server thread/DEBUG]: #9 src/pocketmine/Player(3158): pocketmine\network\mcpe\PlayerNetworkSessionAdapter->handleDataPacket(object pocketmine\network\mcpe\protocol\BatchPacket)

[14:15:37] [Server thread/DEBUG]: #10 src/pocketmine/network/mcpe/RakLibInterface(169): pocketmine\Player->handleDataPacket(object pocketmine\network\mcpe\protocol\BatchPacket)

[14:15:37] [Server thread/DEBUG]: #11 vendor/pocketmine/raklib/src/server/ServerHandler(99): pocketmine\network\mcpe\RakLibInterface->handleEncapsulated(string[20] 37.188.censored 62147, object raklib\protocol\EncapsulatedPacket, integer 0)

[14:15:37] [Server thread/DEBUG]: #12 src/pocketmine/network/mcpe/RakLibInterface(109): raklib\server\ServerHandler->handlePacket()

[14:15:37] [Server thread/DEBUG]: #13 src/pocketmine/network/mcpe/RakLibInterface(99): pocketmine\network\mcpe\RakLibInterface->process()

[14:15:37] [Server thread/DEBUG]: #14 vendor/pocketmine/snooze/src/SleeperHandler(123): pocketmine\network\mcpe\RakLibInterface->pocketmine\network\mcpe{closure}()

[14:15:37] [Server thread/DEBUG]: #15 vendor/pocketmine/snooze/src/SleeperHandler(85): pocketmine\snooze\SleeperHandler->processNotifications()

[14:15:37] [Server thread/DEBUG]: #16 src/pocketmine/Server(2349): pocketmine\snooze\SleeperHandler->sleepUntil(double 1578921337.7668)

[14:15:37] [Server thread/DEBUG]: #17 src/pocketmine/Server(2203): pocketmine\Server->tickProcessor()

[14:15:37] [Server thread/DEBUG]: #18 src/pocketmine/Server(1785): pocketmine\Server->start()

[14:15:37] [Server thread/DEBUG]: #19 src/pocketmine/PocketMine(272): pocketmine\Server->__construct(object BaseClassLoader, object pocketmine\utils\MainLogger, string[16] /home/minecraft/, string[24] /home/minecraft/plugins/)

[14:15:37] [Server thread/DEBUG]: #20 src/pocketmine/PocketMine(295): pocketmine\server()

[14:15:37] [Server thread/DEBUG]: #21 (1): require(string[68] phar:///home/minecraft/pocketmine.phar/src/pocketmine/PocketMine.php)

[14:15:37] [Server thread/INFO]: mentolka12[/37.188.censored:62147] logged out due to Internal server error

[14:15:37] [RakLibServer thread/NOTICE]: Blocked 37.188.censored for 5 seconds