Part won't tween no matter what

[weakroblox35]

I know this is a common issue and the solution is mostly “anchoring the part” but i tried everything and it still wouldn’t change position despite t.Completed firing!
Yes the part is anchored.

local t = game:GetService("TweenService"):Create(workspace.TTTTT, TweenInfo.new(1), {Position = workspace.TTTTT.Position + Vector3.new(0,20,0)})
local p = workspace.TTTTT.Position
script.Parent.ProximityPrompt.TriggerEnded:Connect(function(__PLAYER)
	if script.Parent.__UP.Value ~= false then
		script.Parent.__UP.Value = true
		script.Parent.ProximityPrompt.Enabled = false
		script.Parent.Sound:Play()
	task.delay(3,function()
		t:Play()
	end)
	t.Completed:Connect(function() -- This fires even though tween didn't even "play"!
		task.wait(1.5)
		script.Parent.ProximityPrompt.Enabled = true
		script.Parent.Sound:Stop()
	end)
end
end)

[xDeltaXen]

I tried with and without changing position, tried with and without changing anchor, tried with and without the tween service, it just won’t change position