Error: "Call to a member function getName() on null" (EXCEPTION) in "essentialsTP_dev-31.phar/src/essentialsTP/essentialsTP" at line 470

[teracube]

https://poggit.pmmp.io/r/34386/essentialsTP_dev-31.phar
https://jenkins.pmmp.io/job/PocketMine-MP/1735/artifact/PocketMine-MP.phar

 to a member function getName() on null" (EXCEPTION) in "essentialsTP_dev-31.phar/src/essentialsTP/essentialsTP" at line 470
2019-01-04 [20:35:54] [Server thread/DEBUG]: #0 src/pocketmine/plugin/MethodEventExecutor(38): essentialsTP\essentialsTP->onPlayerRespawn(pocketmine\event\player\PlayerRespawnEvent object)
2019-01-04 [20:35:54] [Server thread/DEBUG]: #1 src/pocketmine/plugin/RegisteredListener(98): pocketmine\plugin\MethodEventExecutor->execute(essentialsTP\essentialsTP object, pocketmine\event\player\PlayerRespawnEvent object)
2019-01-04 [20:35:54] [Server thread/DEBUG]: #2 src/pocketmine/event/Event(96): pocketmine\plugin\RegisteredListener->callEvent(pocketmine\event\player\PlayerRespawnEvent object)
2019-01-04 [20:35:54] [Server thread/DEBUG]: #3 src/pocketmine/Player(3608): pocketmine\event\Event->call()
2019-01-04 [20:35:54] [Server thread/DEBUG]: #4 src/pocketmine/Player(1063): pocketmine\Player->respawn()
2019-01-04 [20:35:54] [Server thread/DEBUG]: #5 src/pocketmine/network/mcpe/PlayerNetworkSessionAdapter(287): pocketmine\Player->doFirstSpawn()
2019-01-04 [20:35:54] [Server thread/DEBUG]: #6 src/pocketmine/network/mcpe/protocol/SetLocalPlayerAsInitializedPacket(45): pocketmine\network\mcpe\PlayerNetworkSessionAdapter->handleSetLocalPlayerAsInitialized(pocketmine\network\mcpe\protocol\SetLocalPlayerAsInitializedPacket object)
2019-01-04 [20:35:54] [Server thread/DEBUG]: #7 src/pocketmine/network/mcpe/PlayerNetworkSessionAdapter(99): pocketmine\network\mcpe\protocol\SetLocalPlayerAsInitializedPacket->handle(pocketmine\network\mcpe\PlayerNetworkSessionAdapter object)
2019-01-04 [20:35:54] [Server thread/DEBUG]: #8 src/pocketmine/network/mcpe/protocol/BatchPacket(114): pocketmine\network\mcpe\PlayerNetworkSessionAdapter->handleDataPacket(pocketmine\network\mcpe\protocol\SetLocalPlayerAsInitializedPacket object)
2019-01-04 [20:35:54] [Server thread/DEBUG]: #9 src/pocketmine/network/mcpe/PlayerNetworkSessionAdapter(99): pocketmine\network\mcpe\protocol\BatchPacket->handle(pocketmine\network\mcpe\PlayerNetworkSessionAdapter object)
2019-01-04 [20:35:54] [Server thread/DEBUG]: #10 src/pocketmine/Player(3061): pocketmine\network\mcpe\PlayerNetworkSessionAdapter->handleDataPacket(pocketmine\network\mcpe\protocol\BatchPacket object)
2019-01-04 [20:35:54] [Server thread/DEBUG]: #11 src/pocketmine/network/mcpe/RakLibInterface(162): pocketmine\Player->handleDataPacket(pocketmine\network\mcpe\protocol\BatchPacket object)
2019-01-04 [20:35:54] [Server thread/DEBUG]: #12 vendor/pocketmine/raklib/src/server/ServerHandler(98): pocketmine\network\mcpe\RakLibInterface->handleEncapsulated(string 88.XXX.XXX.204 55948, raklib\protocol\EncapsulatedPacket object, integer 0)
2019-01-04 [20:35:54] [Server thread/DEBUG]: #13 src/pocketmine/network/mcpe/RakLibInterface(102): raklib\server\ServerHandler->handlePacket()
2019-01-04 [20:35:54] [Server thread/DEBUG]: #14 src/pocketmine/network/mcpe/RakLibInterface(92): pocketmine\network\mcpe\RakLibInterface->process()
2019-01-04 [20:35:54] [Server thread/DEBUG]: #15 vendor/pocketmine/snooze/src/SleeperHandler(120): pocketmine\network\mcpe\RakLibInterface->pocketmine\network\mcpe\{closure}()
2019-01-04 [20:35:54] [Server thread/DEBUG]: #16 vendor/pocketmine/snooze/src/SleeperHandler(82): pocketmine\snooze\SleeperHandler->processNotifications()
2019-01-04 [20:35:54] [Server thread/DEBUG]: #17 src/pocketmine/Server(2278): pocketmine\snooze\SleeperHandler->sleepUntil(double 1546630552.947)
2019-01-04 [20:35:54] [Server thread/DEBUG]: #18 src/pocketmine/Server(2139): pocketmine\Server->tickProcessor()
2019-01-04 [20:35:54] [Server thread/DEBUG]: #19 src/pocketmine/Server(1715): pocketmine\Server->start()
2019-01-04 [20:35:54] [Server thread/DEBUG]: #20 src/pocketmine/PocketMine(249): pocketmine\Server->__construct(BaseClassLoader object, pocketmine\utils\MainLogger object, string /home/myserver/, string /home/myserver/plugins/)
2019-01-04 [20:35:54] [Server thread/DEBUG]: #21 /home/myserver/PocketMine-MP.phar(1): require(string phar:///home/myserver/PocketMine-MP.phar/src/pocketmine/PocketMine.php)
2019-01-04 [20:35:54] [RakLibServer thread/NOTICE]: Blocked 88.XXX.XXX.204 for 5 seconds