Error: "Call to a member function teleport() on null" (EXCEPTION) in "TeaSpoon_dev-32.phar

[teracube]

TeaSpoon_dev-32
PocketMine-MP_1.7dev-465

sorry i don't know how to reproduce

``2017-11-30 [18:00:41] �[Server thread/CRITICAL]: Unhandled exception executing command 'world tp rp' in world: Call to a member function teleport() on null�
2017-11-30 [18:00:41] �[Server thread/CRITICAL]: Error: "Call to a member function teleport() on null" (EXCEPTION) in "TeaSpoon_dev-32.phar/src/CortexPE/commands/WorldCommand" at line 64�
2017-11-30 [18:00:41] �[Server thread/DEBUG]: #0 src/pocketmine/command/SimpleCommandMap(258): CortexPE\commands\WorldCommand->execute(pocketmine\Player object, string world, array Array())�
2017-11-30 [18:00:41] �[Server thread/DEBUG]: #1 src/pocketmine/Server(1980): pocketmine\command\SimpleCommandMap->dispatch(pocketmine\Player object, string world tp rp)�
2017-11-30 [18:00:41] �[Server thread/DEBUG]: #2 src/pocketmine/Player(2122): pocketmine\Server->dispatchCommand(pocketmine\Player object, string world tp rp)�
2017-11-30 [18:00:41] �[Server thread/DEBUG]: #3 src/pocketmine/network/mcpe/PlayerNetworkSessionAdapter(220): pocketmine\Player->chat(string /world tp rp)�
2017-11-30 [18:00:41] �[Server thread/DEBUG]: #4 src/pocketmine/network/mcpe/protocol/CommandRequestPacket(54): pocketmine\network\mcpe\PlayerNetworkSessionAdapter->handleCommandRequest(pocketmine\network\mcpe\protocol\CommandRequestPacket object)�
2017-11-30 [18:00:41] �[Server thread/DEBUG]: #5 src/pocketmine/network/mcpe/PlayerNetworkSessionAdapter(92): pocketmine\network\mcpe\protocol\CommandRequestPacket->handle(pocketmine\network\mcpe\PlayerNetworkSessionAdapter object)�
2017-11-30 [18:00:41] �[Server thread/DEBUG]: #6 src/pocketmine/network/mcpe/protocol/BatchPacket(115): pocketmine\network\mcpe\PlayerNetworkSessionAdapter->handleDataPacket(pocketmine\network\mcpe\protocol\CommandRequestPacket object)�
2017-11-30 [18:00:41] �[Server thread/DEBUG]: #7 src/pocketmine/network/mcpe/PlayerNetworkSessionAdapter(92): pocketmine\network\mcpe\protocol\BatchPacket->handle(pocketmine\network\mcpe\PlayerNetworkSessionAdapter object)�
2017-11-30 [18:00:41] �[Server thread/DEBUG]: #8 src/pocketmine/Player(3000): pocketmine\network\mcpe\PlayerNetworkSessionAdapter->handleDataPacket(pocketmine\network\mcpe\protocol\BatchPacket object)�
2017-11-30 [18:00:41] �[Server thread/DEBUG]: #9 src/pocketmine/network/mcpe/RakLibInterface(143): pocketmine\Player->handleDataPacket(pocketmine\network\mcpe\protocol\BatchPacket object)�
2017-11-30 [18:00:41] �[Server thread/DEBUG]: #10 vendor/pmmp/raklib/server/ServerHandler(99): pocketmine\network\mcpe\RakLibInterface->handleEncapsulated(string 8x.xxx.179.140:58222, raklib\protocol\EncapsulatedPacket object, integer 0)�
2017-11-30 [18:00:41] �[Server thread/DEBUG]: #11 src/pocketmine/network/mcpe/RakLibInterface(84): raklib\server\ServerHandler->handlePacket()�
2017-11-30 [18:00:41] �[Server thread/DEBUG]: #12 src/pocketmine/network/Network(89): pocketmine\network\mcpe\RakLibInterface->process()�
2017-11-30 [18:00:41] �[Server thread/DEBUG]: #13 src/pocketmine/Server(2516): pocketmine\network\Network->processInterfaces()�
2017-11-30 [18:00:41] �[Server thread/DEBUG]: #14 src/pocketmine/Server(2272): pocketmine\Server->tick()�
2017-11-30 [18:00:41] �[Server thread/DEBUG]: #15 src/pocketmine/Server(2147): pocketmine\Server->tickProcessor()�
2017-11-30 [18:00:41] �[Server thread/DEBUG]: #16 src/pocketmine/Server(1735): pocketmine\Server->start()�
2017-11-30 [18:00:41] �[Server thread/DEBUG]: #17 src/pocketmine/PocketMine(552): pocketmine\Server->__construct(BaseClassLoader object, pocketmine\utils\MainLogger object, string phar:///home/gsp_1485/g3.hmserv.eu-19144/PocketMine-MP.phar/, string /home/gsp_1485/g3.hmserv.eu-19144/, string /home/gsp_1485/g3.hmserv.eu-19144/plugins/)�
2017-11-30 [18:00:41] �[Server thread/DEBUG]: #18 /home/gsp_1485/g3.hmserv.eu-19144/PocketMine-MP.phar(1): require(string phar:///home/gsp_1485/g3.hmserv.eu-19144/PocketMine-MP.phar/src/pocketmine/PocketMine.php)�```