My remote event for my shop doesn't work. Can someone explain why?

This is normal script:

local rp = game:GetService("ReplicatedStorage")
script.Parent.Triggered:Connect(function(player)
	print(player)
	rp.shopactivate:FireClient(player)
end)

This is local script in player scripts:

local rp = game:GetService("ReplicatedStorage")
rp.shopactivate:OnClientEvent(function(player)
	player.PlayerGui.Shop.ImageLabel.Transparency = 1
end)

The first script works but not the local script. I get the error "OnClientEvent is not a valid member of RemoteEvent "ReplicatedStorage.shopactivate""

try this tutorial https://www.youtube.com/watch?v=uVUCaFs4Bh4

You can't access player gui's in local scripts