Character not valid member of workspace.terrain?

I am getting an error in my punch script that says: Character is not a valid member of Terrain "Workspace.Terrain"
not sure how to fix this, but it might be because the characters I am using are R15 and I am also using the terrain feature.

Here is the server script where I am getting the error

game.ReplicatedStorage.Remotes.Punch.OnServerEvent:Connect(function(player, damage)
	for i, Target in pairs(game.Workspace:GetDescendants()) do
		if Target.Name ~= player.Name then
			if(Target.Character.HumanoidRootPart.Position - player.Character.HumanoidRootPart.Position).magnitude < 5 then
				Target.Character.Humanoid.Health -= damage
			end
		end
	end
end)

You need to filter out the Target, you are currently including everything in the workspace except your own character, and obvious Terrain doesn’t have a character.

Just replace line 3 with something like

if Target.Name ~= player.Name and Target:FindFirstChildWhichIsA(‘Humanoid’) then

This checks for if the Target has Humanoid inside.

Also, Target most likely do not have an instance called Character inside, so consider just doing Target.HumanoidRootPart and Target.Humanoid instead.