My "Admin" Chat Commands not working?

So I have been trying to do chat commands for the admins in my game. I have made a print command which will print what ever you put in the brackets. Now I made that as a test and I actually want to make a require command which will fire a remote with the require in the remote. This is the print script :

game.Players.PlayerAdded:Connect(function(player)
	player.Chatted:Connect(function(message)
		if message ~= "print" then
			print(message,"")
		end

	end)

end)

It works flawlessly and can print any message that contains print but this require script:

remote = game.Workspace.RemoteEvent
game.Players.PlayerAdded:Connect(function(player)
	player.Chatted:Connect(function(message)
		if message ~= "require" then
			remote:FireServer(message,"")
		end

	end)

end)

Doesnt work and gives me this error
FireServer can only be called from the client

Any suggestions?

Use a bindable event or require it from the admin commands script.

Your code is being ran from the server, which is inaccessible to :FireServer.

And is probably accessible to the functions you were trying to access with :FireServer.