Unable to cast value to Object?

What happening?

script.Parent.MouseClick:connect(function()
	game:GetService("ReplicatedStorage"):FindFirstChild("OnEat"):FireClient("eat")
end)

The function “:FireClient(playerToSendTo, additionalArguments)” starts with the player, not the arguments.

RemoteEvent:FireClient(Player,”eat”)

It gives “unable to cast value to object” because its expecting the “Player” object but gets the string “eat” in its place.