error on command /is remove

[nasiridrishi]

Genisys :- GenisysPro-1.1dev (8b113db) LlamaSpit
Plugin ver:- testing branch 1.0.5

error:

Notice: Undefined variable: player in D:\Server\SkyBlock\plugins\SkyblockPE-Testing\src\SkyBlock\command\SkyBlockCommand.php on line 446
[15:44:47] [Server thread/CRITICAL]: Unhandled exception executing command 'is remove eqestriang' in skyblock: Argument 1 passed to SkyBlock\skyblock\SkyBlockManager::getPlayerConfig() must be an instance of pocketmine\Player, null given, called in D:\Server\SkyBlock\plugins\SkyblockPE-Testing\src\SkyBlock\command\SkyBlockCommand.php on line 446
[15:44:47] [Server thread/CRITICAL]: TypeError: "Argument 1 passed to SkyBlock\skyblock\SkyBlockManager::getPlayerConfig() must be an instance of pocketmine\Player, null given, called in D:\Server\SkyBlock\plugins\SkyblockPE-Testing\src\SkyBlock\command\SkyBlockCommand.php on line 446" (EXCEPTION) in "/SkyblockPE-Testing/src/SkyBlock/skyblock/SkyBlockManager" at line 112
ver