Internal Server Error occurs when placing a shop

[ThatZeoGal]

The command is working fine, but when a choose a block to be a shop I get an internal server error and it boots me out of the server, and when I try to go back in, I just get another error. Sidenote: I am using PocketMine - MP 3.14.0 Here is the console logs when I try to place the shop:

[20:57:14] [Server thread/CRITICAL]: Error: "Class 'pocketmine\network\mcpe\protocol\AddItemEntityPacket' not found" (EXCEPTION) in "plugins/EconomyShop.phar/src/onebone/economyshop/item/ItemDisplayer" at line 52
[20:57:14] [Server thread/DEBUG]: #0 plugins/EconomyShop.phar/src/onebone/economyshop/item/ItemDisplayer(64): onebone\economyshop\item\ItemDisplayer->spawnTo(object pocketmine\Player)
[20:57:14] [Server thread/DEBUG]: #1 plugins/EconomyShop.phar/src/onebone/economyshop/EconomyShop(249): onebone\economyshop\item\ItemDisplayer->spawnToAll(object pocketmine\level\Level)
[20:57:14] [Server thread/DEBUG]: #2 src/pocketmine/plugin/MethodEventExecutor(42): onebone\economyshop\EconomyShop->onBlockTouch(object pocketmine\event\player\PlayerInteractEvent)
[20:57:14] [Server thread/DEBUG]: #3 src/pocketmine/plugin/RegisteredListener(80): pocketmine\plugin\MethodEventExecutor->execute(object onebone\economyshop\EconomyShop, object pocketmine\event\player\PlayerInteractEvent)
[20:57:14] [Server thread/DEBUG]: #4 src/pocketmine/event/Event(88): pocketmine\plugin\RegisteredListener->callEvent(object pocketmine\event\player\PlayerInteractEvent)
[20:57:14] [Server thread/DEBUG]: #5 src/pocketmine/level/Level(1870): pocketmine\event\Event->call()
[20:57:14] [Server thread/DEBUG]: #6 src/pocketmine/Player(2491): pocketmine\level\Level->useItemOn(object pocketmine\math\Vector3, object pocketmine\item\ItemBlock, integer 5, object pocketmine\math\Vector3, object pocketmine\Player, boolean 1)
[20:57:14] [Server thread/DEBUG]: #7 src/pocketmine/network/mcpe/PlayerNetworkSessionAdapter(150): pocketmine\Player->handleInventoryTransaction(object pocketmine\network\mcpe\protocol\InventoryTransactionPacket)
[20:57:14] [Server thread/DEBUG]: #8 src/pocketmine/network/mcpe/protocol/InventoryTransactionPacket(171): pocketmine\network\mcpe\PlayerNetworkSessionAdapter->handleInventoryTransaction(object pocketmine\network\mcpe\protocol\InventoryTransactionPacket)
[20:57:14] [Server thread/DEBUG]: #9 src/pocketmine/network/mcpe/PlayerNetworkSessionAdapter(110): pocketmine\network\mcpe\protocol\InventoryTransactionPacket->handle(object pocketmine\network\mcpe\PlayerNetworkSessionAdapter)
[20:57:14] [Server thread/DEBUG]: #10 src/pocketmine/network/mcpe/protocol/BatchPacket(127): pocketmine\network\mcpe\PlayerNetworkSessionAdapter->handleDataPacket(object pocketmine\network\mcpe\protocol\InventoryTransactionPacket)
[20:57:14] [Server thread/DEBUG]: #11 src/pocketmine/network/mcpe/PlayerNetworkSessionAdapter(110): pocketmine\network\mcpe\protocol\BatchPacket->handle(object pocketmine\network\mcpe\PlayerNetworkSessionAdapter)
[20:57:14] [Server thread/DEBUG]: #12 src/pocketmine/Player(3235): pocketmine\network\mcpe\PlayerNetworkSessionAdapter->handleDataPacket(object pocketmine\network\mcpe\protocol\BatchPacket)
[20:57:14] [Server thread/DEBUG]: #13 src/pocketmine/network/mcpe/RakLibInterface(169): pocketmine\Player->handleDataPacket(object pocketmine\network\mcpe\protocol\BatchPacket)
[20:57:14] [Server thread/DEBUG]: #14 vendor/pocketmine/raklib/src/server/ServerHandler(99): pocketmine\network\mcpe\RakLibInterface->handleEncapsulated(string[19] My IP adress 43524, object raklib\protocol\EncapsulatedPacket, integer 0)
[20:57:14] [Server thread/DEBUG]: #15 src/pocketmine/network/mcpe/RakLibInterface(109): raklib\server\ServerHandler->handlePacket()
[20:57:14] [Server thread/DEBUG]: #16 src/pocketmine/network/mcpe/RakLibInterface(99): pocketmine\network\mcpe\RakLibInterface->process()
[20:57:14] [Server thread/DEBUG]: #17 vendor/pocketmine/snooze/src/SleeperHandler(123): pocketmine\network\mcpe\RakLibInterface->pocketmine\network\mcpe{closure}()
[20:57:14] [Server thread/DEBUG]: #18 vendor/pocketmine/snooze/src/SleeperHandler(85): pocketmine\snooze\SleeperHandler->processNotifications()
[20:57:14] [Server thread/DEBUG]: #19 src/pocketmine/Server(2157): pocketmine\snooze\SleeperHandler->sleepUntil(double 1593291434.5577)
[20:57:14] [Server thread/DEBUG]: #20 src/pocketmine/Server(1994): pocketmine\Server->tickProcessor()
[20:57:14] [Server thread/DEBUG]: #21 src/pocketmine/Server(1588): pocketmine\Server->start()
[20:57:14] [Server thread/DEBUG]: #22 src/pocketmine/PocketMine(273): pocketmine\Server->__construct(object BaseClassLoader, object pocketmine\utils\MainLogger, string[13] /opt/service/, string[21] /opt/service/plugins/)
[20:57:14] [Server thread/DEBUG]: #23 src/pocketmine/PocketMine(304): pocketmine\server()
[20:57:14] [Server thread/DEBUG]: #24 (11): require(string[68] phar:///opt/service/PocketMine-MP.phar/src/pocketmine/PocketMine.php)
[20:57:14] [Server thread/INFO]: TopSupperhero81 left the game
[20:57:14] [Server thread/INFO]: TopSupperhero81[/My IP adress:43524] logged out due to Internal server error
[20:57:14] [RakLibServer thread/NOTICE]: Blocked My IP adress for 5 seconds