how do i fix this error in the code

[Madoc]

command /pets:
    permission: server.owner
    trigger:
        pets(player)
        
        

        
on inventory click:
    if name of player's current inventory contains "&aPets":
        cancel event
        if clicked inventory != player's inventory:
            if index of event-slot = 49:
                close player's inventory
            if index of event-slot = 51:
                delete {current::pet::%player's uuid%}
                send "&cYou Removed your pet!"
                
        
function pets(P: player):
    open chest inventory with 6 rows named "&aPets" to {_P}
    set slot integers between 45 and 54 of {_P}'s current inventory to black stained glass pane named ""
    set slot 49 of {_P}'s current inventory to barrier named "&c&lClose"
    set slot 51 of {_P}'s current inventory to tnt named "&cRemove Pet"
    
    set {_var} to -1
    loop  {pets::%{_P}'s uuid%}:
    add 1 to {_var}
    set slot {_var} of {_P}'s current inventory to loop-value

 

[Shroob]

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