GetMarkedReachedSignal isn't a valid member of AnimationTrack? - scripting

Question

So I’m trying to make two functions happen upon a marker being reached in an animation, however it says:
“GetMarkedReachedSignal is not a valid member of AnimationTrack” I’m really confused.
Heres my code:
`
script.Parent.OnServerEvent:Connect(function(plr)
print("Started")
local on = true
local char = plr.Character
local fist = game.Lighting.DivergentFists:Clone()
local leftfist = game.Lighting.DivergentFists2:Clone()
local anim = script.Parent.Parent.DiverGentAnim
local weld = Instance.new("ManualWeld")
local leftweld = Instance.new("ManualWeld")
local function RightHandEmit()
fist.Parent = char.RightHand
fist.CFrame = char.RightHand.CFrame
weld.Parent = char.RightHand
weld.Part0 = char.RightHand
weld.Part1 = fist
weld.C0 = CFrame.new(0,-1,0)
local function FlameEmit()
while on == true do
fist.Attachment.BlackFlames:Emit(10)
fist.Attachment.Flames:Emit(10)
wait(.1)
end
end
local function SparksEmit()
while on == true do
fist.Attachment.Aura:Emit(10)
fist.Attachment.Main:Emit(10)
wait(.1)
end
end
spawn(SparksEmit)
spawn(FlameEmit)
end
local function LeftHandEmit()
leftfist.Parent = char.LeftHand
leftfist.CFrame = char.LeftHand.CFrame
leftweld.Parent = char.LeftHand
leftweld.Part0 = char.LeftHand
leftweld.Part1 = leftfist
leftweld.C0 = CFrame.new(0,-1,0)
local function LeftFlameEmit()
while on == true do
leftfist.Attachment.BlackFlames:Emit(10)
leftfist.Attachment.Flames:Emit(10)
wait(.1)
end
end
local function LeftSparksEmit()
while on == true do
leftfist.Attachment.Aura:Emit(10)
leftfist.Attachment.Main:Emit(10)
wait(.1)
end
end
spawn(LeftFlameEmit)
spawn(LeftSparksEmit)
end
local load = char.Humanoid.Animator:LoadAnimation(anim)
load:Play()
load:GetMarkerReachedSignal("ReachedStart"):Connect(function()
print("Reached")
spawn(LeftHandEmit)
spawn(RightHandEmit)
end)
end)
`
Any help is appreciated, thanks! (This is all on the server by the way)
I tried doing it on the client but nothing happened