Trying to get Players to Not Collide with Eachother

[FastAsLightning101 (FastEatsWater)]

I’ve been trying to get my players not to collide with each other, but every time I do, it gives this warning + the script doesn’t work.

BEFORE REPLY: Yes, my scripts to disable player collision are using Basepart.CollisionGroup. Or atleast I believe they are. The “SetPartCollisionGroup” that the warning is referring to isn’t even in the script. The warning only shows up when i use the test feature on roblox studio

Here is the code I’m using. It’s in serverscriptservice. Note: This is code from the official roblox documentation on collision filtering, which is what confuses me.

local PhysicsService = game:GetService("PhysicsService")
local Players = game:GetService("Players")

PhysicsService:RegisterCollisionGroup("Characters")
PhysicsService:CollisionGroupSetCollidable("Characters", "Characters", false)

local function onDescendantAdded(descendant)
	-- Set collision group for any part descendant
	if descendant:IsA("BasePart") then
		descendant.CollisionGroup = "Characters"
	end
end

local function onCharacterAdded(character)
	-- Process existing and new descendants for physics setup
	for _, descendant in pairs(character:GetDescendants()) do
		onDescendantAdded(descendant)
	end
	character.DescendantAdded:Connect(onDescendantAdded)
end

Players.PlayerAdded:Connect(function(player)
	-- Detect when the player's character is added
	player.CharacterAdded:Connect(onCharacterAdded)
end)

I’ve tried a lot of different scripts, but all seem to give the same error message. Anyone know any solutions that work to disable player colliding with eachother?

Edit: i tested out the script in another place, and it works perfectly fine. now i am much more confused on why it doesn’t even work on this place.

[FastAsLightning101 (FastEatsWater)]

nevermind. of course it was from another script that was causing this issue. im dumb