Cannot load the AnimationClipProvider Service

Hello guys,
So currently, i have been working to make a weapon that plays multiple animations in a row.

At first, everything seem to be fine, but then this problem occur:

Here's the code
local RS = game:GetService("ReplicatedStorage")
local Player = game:GetService("Players")
local uis = game:GetService("UserInputService")
local char = Player.LocalPlayer.Character or Player.LocalPlayer.CharacterAdded:Wait()
local clientCast = require(RS.ClientCast)

local humanoid = char:WaitForChild("Humanoid")
local animator = humanoid:WaitForChild("Animator")

local tool = script.Parent

local isequiped = false
local combo = 0

local WPDT = require(RS.GameDataStorage.Weapons)

local clicked = false
--other attacks
local function leghitbox (leg)
    
    
    local cloneLeg = game.Workspace.Body["Left Leg"]:Clone()
    cloneLeg.Anchored = false
    cloneLeg.CanCollide = false
    cloneLeg.Name = "cloneLeg"
    cloneLeg.Transparency = 1
    local legHit = clientCast.new(cloneLeg, RaycastParams.new())
    local weld = Instance.new("Weld")
    weld.Parent = leg
    weld.Part0 = leg
    weld.Part1 = cloneLeg
    
    cloneLeg.CFrame = leg.CFrame
    cloneLeg.Parent = leg
    
    legHit:Start()
    
end

local function stopLeghitbox (leg)
    

    if leg.cloneLeg and leg.Weld then    
    leg.cloneLeg:Destroy()
        leg.Weld:Destroy()
    else
        return
    end
    
end

--animations plays


local walktrack
local idletrack

print(animator)
--tool unequiped
local function PAttack (SUani, ATani, ELani)
    
    
    local track
    track = animator:LoadAnimation(SUani)
    track.Looped = false
    track:Play()
    track.Stopped:wait()
    track:Stop(0)

    track = animator:LoadAnimation(ATani)
    track.Looped = false
    track:Play()
    track.Stopped:wait()
    track:Stop(0)

    track = animator:LoadAnimation(ELani)
    track.Looped = false
    track:Play()
    track.Stopped:wait()
    track:Stop(0)
    
end
--tool equiped
tool.Equipped:Connect(function()
    --arms
    local leftArm = char:FindFirstChild("Left Arm")
    local rightArm = char:FindFirstChild("Right Arm")
    
    --clientcast
    local rightHitbox = clientCast.new(tool.Larm.Union, RaycastParams.new()) --i messed up the order lmao
    local leftHitbox = clientCast.new(tool.Rarm.Union, RaycastParams.new())  -- dont worry it will be fine 
    leftHitbox:Stop()
    rightHitbox:Stop()

    uis.InputBegan:Connect(function(key,gpe)
        
        if gpe then return end
        
        if key.UserInputType == Enum.UserInputType.MouseButton1 and clicked == false then
            
            clicked = true

            --combo
            combo = combo % 3 + 1
            --get attacks
            local attacks = WPDT:GetWeaponAttacks("Iron Gloves")
            --attacks animation
            local SUani = Instance.new("Animation")
            local ATani = Instance.new("Animation")
            local ELani = Instance.new("Animation")
            SUani.Parent = RS
            ATani.Parent = RS
            ELani.Parent = RS
            SUani.AnimationId = "rbxassetid://"..tostring(attacks[combo].Startup)
            ATani.AnimationId = "rbxassetid://"..tostring(attacks[combo].Attacking)
            ELani.AnimationId = "rbxassetid://"..tostring(attacks[combo].Endlag)
            
            print(combo)
            
            local leg = char:FindFirstChild("Right Leg")
            
            local hitbox
            
            if combo == 1 or combo == 3 then
                hitbox = leftHitbox
            else
                hitbox = rightHitbox
            end
        

        --    local attackTime = 0
        --    local attackTimeTrack = animator:LoadAnimation(SUani)
        --    attackTime += attackTimeTrack.length
        --    local attackTimeTrack = animator:LoadAnimation(ATani)
        --    attackTime += attackTimeTrack.length
        --    local attackTimeTrack = animator:LoadAnimation(ELani)
        --    attackTime += attackTimeTrack.length

            PAttack(SUani,ATani,ELani,hitbox)
            rightHitbox:Stop()
            leftHitbox:Stop()
            clicked = false
            SUani:Destroy()
            ATani:Destroy()
            ELani:Destroy()
        end        

    end)
end)```

I tried to look for solutions all around the dev forum but all of them gives the same result. So I posted one myself to find it.

Any help is appreciated, thank you!

put task.wait(0.1) in the first line, this issue also occured to me too