Help getItemInHand error code

Can you help me with this code, I get an error on line 63 is the following code
The error marks me in the code of
$mao = $player->getItemInHand();
Is it well written?

public function onMenu(PlayerInteractEvent $e){
$player = $e->getPlayer();
$mao = $player->getItemInHand();

 

give me error

 

lol the error is obvious
You can’t access getItemInHand() from the player object,
you need to use
$player->getInventory()->getItemInHand();