On Walk ?

[FlFlxGamer]

on walk on diamond block:
    if world is "skypvptest":
        cancel event
        if player has permission "diamond.skypvp":
            equip player with diamond helmet of protection 1 and unbreaking 3 named "&aTopex"
            equip player with iron leggings of protection 1 and unbreaking 3 named "&aTopex"
            equip player with iron chestplate of protection 1 and unbreaking 3 named "&aTopex"
            equip player with diamond boots of protection 1 and unbreaking 3 named "&aTopex"
            give 15 arrows named "&aTopex" to player
            set inventory slot 0 of player to diamond sword of sharpness 2 and unbreaking 3 named "&aTopex" to player
            set inventory slot 1 of player to bow of power 2 and unbreaking 5 named "&aTopex" to player

Why it tells me "player" is not an item stack ?
and it tells me that expected 3 tabs in line 5 and it's 3 tabs already

 

[Snow-Pyon]

Remove "to player" and "inventory" from the last two lines.