plugin error with FormAPi dependency

error:

Code:

[17:51:53] [Server thread/CRITICAL]: Could not pass event 'pocketmine\event\server\DataPacketReceiveEvent' to 'FormAPI v1.1.1': Argument 2 passed to gay\API::gay\{closure}() must be of the type array, null given, called in C:\Users\arjxy\Desktop\New folder\plugins\FormAPI-master\src\jojoe77777\FormAPI\FormAPI.php on line 75 on jojoe77777\FormAPI\FormAPI
[17:51:53] [Server thread/CRITICAL]: TypeError: "Argument 2 passed to gay\API::gay\{closure}() must be of the type array, null given, called in C:\Users\arjxy\Desktop\New folder\plugins\FormAPI-master\src\jojoe77777\FormAPI\FormAPI.php on line 75" (EXCEPTION) in "core/src/gay/API" at line 20

code

PHP:

class API
{

    public static function sendForm(Player $player)
    {
        $api = $player->getServer()->getPluginManager()->getPlugin("FormAPI");
        $form = $api->createSimpleForm(function (Player $player, array $data) {
            if (isset($data[0])) {
                $result = $data[0];
                switch ($result) {
                    case 0:
                        $player->sendMessage("1");
                        return;
                    case 1:
                        $player->sendMessage("2");
                        return;
                }
            }
        });
        $form->setTitle("test");
        $form->setContent("testC");
        $form->addButton("test1");
        $form->sendToPlayer($player);
    }

API::sendKitForm($commandSender);