It crashes the server

[ZehuaMc]

Altay Crash Dump Tue Jul 10 21:47:46 UTC 2018

Error: Declaration of GuiShop\Modals\network\GuiDataPickItemPacket::decodePayload() must be compatible with pocketmine\network\mcpe\protocol\DataPacket::decodePayload(): void
File: ShopGui-master/src/GuiShop/Modals/network/GuiDataPickItemPacket
Line: 27
Type: E_COMPILE_ERROR

THIS CRASH WAS CAUSED BY A PLUGIN
BAD PLUGIN: GuiShop v1.0.0-ALPHA1

Code:

Backtrace:

Altay version: 3.0.7 [Protocol 274]
Git commit: 0000000000000000000000000000000000000000
uname -a: Linux localhost 4.4.78-perf-gea7f933 #1 SMP PREEMPT Fri Jun 22 01:23:48 CST 2018 aarch64
PHP Version: 7.2.3
Zend version: 3.2.0
OS : Linux, android

Loaded plugins:
GuiShop 1.0.0-ALPHA1 by PHP-Devs /georgianYT for API(s) 3.0.0-ALPHA9, 3.0.0-ALPHA10, 3.0.0-ALPHA11, 3.0.0-ALPHA12
DevTools 1.13.0 by PocketMine Team for API(s) 3.0.0, 4.0.0
EconomyAPI 5.7.2 by onebone for API(s) 3.0.0
FormAPI 1.2.0 by jojoe77777 for API(s) 3.0.0
EconomyLand 2.1.2 by onebone for API(s) 3.0.0

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===BEGIN CRASH DUMP===
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===END CRASH DUMP===