Animation refuses to load in?

local tool = script.Parent
local handle = script.Parent:WaitForChild('Handle')

local Debounce = true
local slash = script.Parent:WaitForChild('Slash')

local click = false
local inAttack = false

AniDebounce = true
AxeDebounce = true

tool.Activated:connect(function()

    local plr = game.Players:GetPlayerFromCharacter(tool.Parent)
    local char = plr.Character
    if char then
    local hum = char:WaitForChild('Humanoid')                        
    local slashTrack = hum:LoadAnimation(slash)
    wait(0.1)
        if AniDebounce then
            slashTrack:Play()

            AniDebounce = false
        end
    end

    inAttack = true
    if Debounce then
        Debounce = false
        click = true
        print('tool activated')

        local plr = game.Players:GetPlayerFromCharacter(tool.Parent)

        if plr then 
            handle.Touched:connect(function(hit)
                if inAttack then

                    print('animation')

                    -- Animation

                        local char = plr.Character
                        if char then
                            local hum = char:WaitForChild('Humanoid')                        
                            local slashTrack = hum:LoadAnimation(slash)
                            wait(0.1)
                            if AniDebounce then
                                slashTrack:Play()

                                AniDebounce = false
                            end
                        end

                    -- Tree damage

                    if hit.Parent and hit.Parent.Name ~= plr.Name and hit.Parent:FindFirstChild('Wood') and AxeDebounce then
                        AxeDebounce = false
                        local HP = hit.Parent.HP
                        HP.Value = HP.Value - 30              
                    end

                else
                    print(Debounce)
                    print(click)
                end
            end)
        end

        wait(0.5)
        click = false
        inAttack = false

        wait(5)

        Debounce = true
    end
end)

while wait() do
    if AniDebounce == false then
        wait(2)
        AniDebounce = true
        AxeDebounce = true
    end
end

This is a server script inside a tool in starterpack, this works fine in local servers and test server but refuses to work in real game with error animation ... failed to load in ... (basicly humanoid) maybe I haven't waited long enough for roblox to approve it but that doesn't make sense as I made it about 8 hours ago...