Interval Server Error

[Heech8]

[22:19:11] [Server thread/INFO]: Heech8[/192.168.0.102:43901] logged in with entity id 1 at (world, 317, 119, 151) [22:19:17] [Server thread/INFO]: Heech8 joined the game [22:19:17] [Server thread/CRITICAL]: TypeError: "Argument 1 passed to pocketmine\network\mcpe\NetworkBinaryStream::putString() must be of the type string, int given, called in phar:///storage/emulated/0/PocketMine-MP/PocketMine-MP.phar/src/pocketmine/network/mcpe/protocol/AddActorPacket.php on line 211" (EXCEPTION) in "src/pocketmine/network/mcpe/NetworkBinaryStream" at line 62 [22:19:17] [Server thread/DEBUG]: #0 src/pocketmine/network/mcpe/protocol/AddActorPacket(211): pocketmine\network\mcpe\NetworkBinaryStream->putString(integer 12) [22:19:17] [Server thread/DEBUG]: #1 src/pocketmine/network/mcpe/protocol/DataPacket(127): pocketmine\network\mcpe\protocol\AddActorPacket->encodePayload() [22:19:17] [Server thread/DEBUG]: #2 src/pocketmine/network/mcpe/RakLibInterface(244): pocketmine\network\mcpe\protocol\DataPacket->encode() [22:19:17] [Server thread/DEBUG]: #3 src/pocketmine/Player(3235): pocketmine\network\mcpe\RakLibInterface->putPacket(object pocketmine\Player, object pocketmine\network\mcpe\protocol\AddActorPacket, boolean , boolean ) [22:19:17] [Server thread/DEBUG]: #4 src/pocketmine/Player(3252): pocketmine\Player->sendDataPacket(object pocketmine\network\mcpe\protocol\AddActorPacket, boolean , boolean ) [22:19:17] [Server thread/DEBUG]: #5 plugins/Slapper.phar/src/slapper/entities/SlapperEntity(54): pocketmine\Player->dataPacket(object pocketmine\network\mcpe\protocol\AddActorPacket) [22:19:17] [Server thread/DEBUG]: #6 src/pocketmine/entity/Entity(1945): slapper\entities\SlapperEntity->sendSpawnPacket(object pocketmine\Player) [22:19:17] [Server thread/DEBUG]: #7 src/pocketmine/Player(1075): pocketmine\entity\Entity->spawnTo(object pocketmine\Player) [22:19:17] [Server thread/DEBUG]: #8 src/pocketmine/network/mcpe/PlayerNetworkSessionAdapter(315): pocketmine\Player->doFirstSpawn() [22:19:17] [Server thread/DEBUG]: #9 src/pocketmine/network/mcpe/protocol/SetLocalPlayerAsInitializedPacket(45): pocketmine\network\mcpe\PlayerNetworkSessionAdapter->handleSetLocalPlayerAsInitialized(object pocketmine\network\mcpe\protocol\SetLocalPlayerAsInitializedPacket) [22:19:17] [Server thread/DEBUG]: #10 src/pocketmine/network/mcpe/PlayerNetworkSessionAdapter(110): pocketmine\network\mcpe\protocol\SetLocalPlayerAsInitializedPacket->handle(object pocketmine\network\mcpe\PlayerNetworkSessionAdapter) [22:19:17] [Server thread/DEBUG]: #11 src/pocketmine/network/mcpe/protocol/BatchPacket(126): pocketmine\network\mcpe\PlayerNetworkSessionAdapter->handleDataPacket(object pocketmine\network\mcpe\protocol\SetLocalPlayerAsInitializedPacket) [22:19:17] [Server thread/DEBUG]: #12 src/pocketmine/network/mcpe/PlayerNetworkSessionAdapter(110): pocketmine\network\mcpe\protocol\BatchPacket->handle(object pocketmine\network\mcpe\PlayerNetworkSessionAdapter) [22:19:17] [Server thread/DEBUG]: #13 src/pocketmine/Player(3187): pocketmine\network\mcpe\PlayerNetworkSessionAdapter->handleDataPacket(object pocketmine\network\mcpe\protocol\BatchPacket) [22:19:17] [Server thread/DEBUG]: #14 src/pocketmine/network/mcpe/RakLibInterface(169): pocketmine\Player->handleDataPacket(object pocketmine\network\mcpe\protocol\BatchPacket) [22:19:17] [Server thread/DEBUG]: #15 vendor/pocketmine/raklib/src/server/ServerHandler(99): pocketmine\network\mcpe\RakLibInterface->handleEncapsulated(string[19] 192.168.0.102 43901, object raklib\protocol\EncapsulatedPacket, integer 0) [22:19:17] [Server thread/DEBUG]: #16 src/pocketmine/network/mcpe/RakLibInterface(109): raklib\server\ServerHandler->handlePacket() [22:19:17] [Server thread/DEBUG]: #17 src/pocketmine/network/mcpe/RakLibInterface(99): pocketmine\network\mcpe\RakLibInterface->process() [22:19:17] [Server thread/DEBUG]: #18 vendor/pocketmine/snooze/src/SleeperHandler(123): pocketmine\network\mcpe\RakLibInterface->pocketmine\network\mcpe{closure}() [22:19:17] [Server thread/DEBUG]: #19 vendor/pocketmine/snooze/src/SleeperHandler(85): pocketmine\snooze\SleeperHandler->processNotifications() [22:19:17] [Server thread/DEBUG]: #20 src/pocketmine/Server(2154): pocketmine\snooze\SleeperHandler->sleepUntil(double 1591395557.28) [22:19:17] [Server thread/DEBUG]: #21 src/pocketmine/Server(1991): pocketmine\Server->tickProcessor() [22:19:17] [Server thread/DEBUG]: #22 src/pocketmine/Server(1585): pocketmine\Server->start() [22:19:17] [Server thread/DEBUG]: #23 src/pocketmine/PocketMine(273): pocketmine\Server->__construct(object BaseClassLoader, object pocketmine\utils\MainLogger, string[34] /storage/emulated/0/PocketMine-MP/, string[42] /storage/emulated/0/PocketMine-MP/plugins/) [22:19:17] [Server thread/DEBUG]: #24 src/pocketmine/PocketMine(296): pocketmine\server()

[22:19:17] [Server thread/INFO]: Heech8 left the game [22:19:17] [Server thread/INFO]: Heech8[/192.168.0.102:43901] logged out due to Internal server error

I opened the PocketmineMP-PHAR and look for line 211 and line 62

Line 62: F���.src/pocketmine/network/mcpe/NetworkSession.php�Z2F�^U����3src/pocketmine/network/mcpe/NetworkBinaryStream.php\2F�^9;���=src/pocketmine/network/mcpe/protocol/CommandRequestPacket.phpi2F�^�^J��4src/pocketmine/network/mcpe/protocol/EventPacket.php�2F�^�����;src/pocketmine/network/mcpe/protocol/AddItemActorPacket.php�2F�^����/�=src/pocketmine/network/mcpe/protocol/SubClientLoginPacket.php$2F�^�����Asrc/pocketmine/network/mcpe/protocol/CompletedUsingItemPacket.php�2F�^h���Esrc/pocketmine/network/mcpe/protocol/ServerSettingsResponsePacket.php�2F�^���Q�3src/pocketmine/network/mcpe/protocol/DataPacket.php2F�^���3��6src/pocketmine/network/mcpe/protocol/RespawnPacket.php�2F�^�k��F�9src/pocketmine/network/mcpe/protocol/PlayStatusPacket.php�2F�^#W��c�?src/pocketmine/network/mcpe/protocol/GameRulesChangedPacket.php[2F�^�j(�0�;src/pocketmine/network/mcpe/protocol/RemoveEntityPacket.php�2F�^�]�C�4src/pocketmine/network/mcpe/protocol/BatchPacket.phps2F�^��VѤ@src/pocketmine/network/mcpe/protocol/UpdateBlockSyncedPacket.phpJ2F�^��W3�@src/pocketmine/network/mcpe/protocol/ScriptCustomEventPacket.php�2F�^�F�9O�Dsrc/pocketmine/network/mcpe/protocol/SetScoreboardIdentityPacket.php62F�^�[$=�>src/pocketmine/network/mcpe/protocol/RemoveObjectivePacket.php2F�^�L���?src/pocketmine/network/mcpe/protocol/ActorPickRequestPacket.php�2F�^��z.��>src/pocketmine/network/mcpe/protocol/PurchaseReceiptPacket.php�2F�^�L^�9src/pocketmine/network/mcpe/protocol/PlayerSkinPacket.php2F�^�[�Y�8src/pocketmine/network/mcpe/protocol/StopSoundPacket.php~2F�^��r��7src/pocketmine/network/mcpe/protocol/SetTitlePacket.php�2F�^��|�Dsrc/pocketmine/network/mcpe/protocol/ServerSettingsRequestPacket.php�2F�^dX���Dsrc/pocketmine/network/mcpe/protocol/ClientCacheBlobStatusPacket.php?

Line 211: �>�Ի�~��48�f��~�
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��=OB��{(t��d��A��(�Y�5��0����]�+�rZ:�5yZF/�5b:F?��<�:=:�%u<������<@�e��=B�Ǹ��u�/�H�,;8b�EJ~�`$OK��ɔH���Z�'D�.

please I really need help I'm using Pocketmine for mobile API 3.13.0

[Heech8]

btw, server is not crashing I just can't join It says Interval Server Error.