Making a tool, why is my localscript not animating a player in FE?

Hey there,

This is my first post, please be gentle

I'm a somewhat moderate scripter trying to make a simple knife script. I've been working on the local script first. In play solo it works fine, but when I hit run I get an error!

Humanoid is not a valid member of Model

Here is the script:

-- Made by Chardinok no steal por favor

-- Variables
local tool = script.Parent
local plr = game:GetService("Players").LocalPlayer
local chr = plr.Character or plr.CharacterAdded:wait()
local hum = chr.Humanoid
print(hum)
local animating = false

-- Animations
local stabanim = Instance.new("Animation")
stabanim.AnimationId = "rbxassetid://2306972447"

tool.Activated:connect(function()
    if animating == false then
        animating = true
        local stabtrack = hum:LoadAnimation(stabanim)
        stabtrack:Play()
        wait(0.5)
        stabtrack:Stop()
        animating = false
    end
end)

I appreciate every response.