player is not an item stack

je code des chose et j'ai souvant cette erreur
'player' is not an item stack (inv.sk, line 6: give head of player named "&6Info" to slot 4 of player')






voici mon code
on join:
make console execute command "/clear %player%"
wait 1 ticks
give compass named "&6Jeux & Autres" to slot 0 of player
give gold ingot named "&6Boutique" to slot 2 of player
give skull of player named "&6Info" to slot 4 of player
give clownfish named "&6Amis" to slot 6 of player
give repeater named "&6Parametre" to slot 8 of player