Crash in pocketmine 5.12.0

[NdaruAjaa]

PocketMine-MP version: 5.12.0 [Protocol 649]
Git commit: a35c3406a8c602cb02c412173bd88534a1a418dd
PHP version: 8.2.13
OS: Linux, linux

THIS CRASH WAS CAUSED BY A PLUGIN
BAD PLUGIN: AggressiveOptz

Thread: Main
Error: Call to undefined method pocketmine\network\mcpe\protocol\types\inventory\ItemStack::getNbt()
File: plugins/AggressiveOptz_dev-26 (1).phar/src/muqsit/aggressiveoptz/component/defaults/NetworkItemOptimizationComponent
Line: 65
Type: Error
Backtrace:
#0 pmsrc/src/event/RegisteredListener(61): muqsit\aggressiveoptz\component\defaults\NetworkItemOptimizationComponent->muqsit\aggressiveoptz\component\defaults{closure}(object pocketmine\event\server\DataPacketSendEvent#72803)
#1 pmsrc/src/event/Event(63): pocketmine\event\RegisteredListener->callEvent(object pocketmine\event\server\DataPacketSendEvent#72803)
#2 pmsrc/src/network/mcpe/StandardPacketBroadcaster(47): pocketmine\event\Event->call()
#3 pmsrc/src/network/mcpe/StandardEntityEventBroadcaster(62): pocketmine\network\mcpe\StandardPacketBroadcaster->broadcastPackets(array[1], array[1])
#4 pmsrc/src/network/mcpe/StandardEntityEventBroadcaster(128): pocketmine\network\mcpe\StandardEntityEventBroadcaster->sendDataPacket(array[1], object pocketmine\network\mcpe\protocol\MobArmorEquipmentPacket#84687)
#5 pmsrc/src/entity/Human(519): pocketmine\network\mcpe\StandardEntityEventBroadcaster->onMobArmorChange(array[1], object slapper\entities\SlapperHuman#83124)
#6 plugins/Slapper/src/slapper/entities/SlapperHuman(86): pocketmine\entity\Human->sendSpawnPacket(object pocketmine\player\Player#127570)
#7 pmsrc/src/entity/Entity(1517): slapper\entities\SlapperHuman->sendSpawnPacket(object pocketmine\player\Player#127570)
#8 pmsrc/src/entity/Human(477): pocketmine\entity\Entity->spawnTo(object pocketmine\player\Player#127570)
#9 pmsrc/src/player/Player(785): pocketmine\entity\Human->spawnTo(object pocketmine\player\Player#127570)
#10 pmsrc/src/player/Player(843): pocketmine\player\Player->spawnEntitiesOnChunk(int 15, int 18)
#11 pmsrc/src/network/mcpe/NetworkSession(1115): pocketmine\player\Player->pocketmine\player{closure}()
#12 pmsrc/src/network/mcpe/compression/CompressBatchPromise(60): pocketmine\network\mcpe\NetworkSession->pocketmine\network\mcpe{closure}(object pocketmine\network\mcpe\compression\CompressBatchPromise#187930)
#13 pmsrc/src/network/mcpe/ChunkRequestTask(86): pocketmine\network\mcpe\compression\CompressBatchPromise->resolve(string[2475] ...}l.......s.....z..:.E@q.....!.......nR.x."!@A!.?hr..q..*p.?I.@...3.......1..)
#14 pmsrc/src/scheduler/AsyncPool(280): pocketmine\network\mcpe\ChunkRequestTask->onCompletion()
#15 pmsrc/src/timings/TimingsHandler(198): pocketmine\scheduler\AsyncPool->pocketmine\scheduler{closure}()
#16 pmsrc/src/scheduler/AsyncPool(279): pocketmine\timings\TimingsHandler->time(object Closure#188146)
#17 pmsrc/src/scheduler/AsyncPool(127): pocketmine\scheduler\AsyncPool->collectTasksFromWorker(int 6)
#18 pmsrc/src/TimeTrackingSleeperHandler(58): pocketmine\scheduler\AsyncPool->pocketmine\scheduler{closure}()
#19 pmsrc/vendor/pocketmine/snooze/src/SleeperHandler(120): pocketmine\TimeTrackingSleeperHandler->pocketmine{closure}()
#20 pmsrc/src/TimeTrackingSleeperHandler(77): pocketmine\snooze\SleeperHandler->processNotifications()
#21 pmsrc/vendor/pocketmine/snooze/src/SleeperHandler(79): pocketmine\TimeTrackingSleeperHandler->processNotifications()
#22 pmsrc/src/Server(1696): pocketmine\snooze\SleeperHandler->sleepUntil(float 1710257024.0784)
#23 pmsrc/src/Server(1066): pocketmine\Server->tickProcessor()
#24 pmsrc/src/PocketMine(350): pocketmine\Server->__construct(object pocketmine\thread\ThreadSafeClassLoader#6, object pocketmine\utils\MainLogger#3, string[16] /home/container/, string[24] /home/container/plugins/)
#25 pmsrc/src/PocketMine(373): pocketmine\server()
#26 pmsrc(11): require(string[60] phar:///home/container/PocketMine-MP.phar/src/PocketMine.php)

Code:
[56] $this->cleanItemStackNbt($nbt);
[57] }
[58] }elseif($packet instanceof MobArmorEquipmentPacket){
[59] foreach($targets as $target){
[60] if($packet->actorRuntimeId === $target->getPlayer()?->getId()){
[61] continue 2;
[62] }
[63] }
[64]
[65] $nbt = $packet->head->getItemStack()->getNbt();
[66] if($nbt !== null){
[67] $this->cleanItemStackNbt($nbt);
[68] }
[69] $nbt = $packet->chest->getItemStack()->getNbt();
[70] if($nbt !== null){
[71] $this->cleanItemStackNbt($nbt);
[72] }
[73] $nbt = $packet->legs->getItemStack()->getNbt();
[74] if($nbt !== null){
[75] $this->cleanItemStackNbt($nbt);