(Edit) Why isn't the explosion appearing?

This script essentially generates an orb, and shoots in out where your mouse cursor is, it will then blow up. Everything is working well, except for the explosion. It wont appear.

I have absolutely NO clue as to why its

game.ReplicatedStorage.Moves.OnServerEvent:Connect(function(plr,mousehit,key)
	if key == "Shakkahou" then
		local char = plr.Character
		local hum = char.Humanoid
		local root = char.HumanoidRootPart
		local charging = Instance.new("Part")
		charging.Size = Vector3.new(1,1,1)
		charging.Transparency = 0.5
		charging.CanCollide = false
		charging.BrickColor = BrickColor.new("Really red")
		charging.Shape = Enum.PartType.Ball
		charging.Material = Enum.Material.Neon
		charging.Parent = workspace
local weld = Instance.new("Weld")
	charging.CFrame = root.CFrame * CFrame.new(0,1.3,-2)
	weld.Part0 = root
	weld.Part1 = charging
	weld.C0 = root.CFrame:Inverse()
	weld.C1 = charging.CFrame:Inverse()
	weld.Parent = charging
	wait(1)
	weld:Destroy()
	local bv = Instance.new("BodyVelocity")
	bv.Parent = charging
	bv.MaxForce = Vector3.new(1e8,1e8,1e8)
	bv.Velocity = mousehit.lookVector*50 
	game.Debris:AddItem(charging,5)
	local debounce = false
	charging.Touched:Connect(function(hit)
		if debounce == false then
		debounce = true
		local ehum = hit.Parent:FindFirstChild("Humanoid") or hit.Parent.Parent:findFirstChild("Humanoid")
		if ehum and ehum ~= hum then
			ehum:TakeDamage(10)
		end
		local explosion = Instance.new("Part",workspace)
		explosion.Size = Vector3.new(1,1,1)
		explosion.Transparency = 0.5
		explosion.CanCollide = false
		explosion.Name = "Explosion"
		explosion.BrickColor = BrickColor.new("Really red")
		explosion.Shape = Enum.PartType.Ball
		explosion.Material = Enum.Material.Neon
		explosion.Position = CFrame.new(charging.CFrame.x,mousehit.y,charging.CFrame.z) 
        local tween = game:GetService("TweenService")
		local tweeninfo = TweenInfo.new(2,Enum.EasingStyle.Quint,Enum.EasingDirection.In,0,false,0)
        local tweenproperties = {Size = Vector3.new(50,50,50)}
        tween:Create(explosion,tweeninfo,tweenproperties)
        wait(2)
        local tweeninfo2 = TweenInfo.new(1,Enum.EasingStyle.Quint,Enum.EasingDirection.In,0,false,0)
        local tweenproperties2 = {Transparency = 1,Size = Vector3.new(40,40,40)}
        tween:Create(explosion,tweeninfo2,tweenproperties2)
        wait(1)
        explosion:Destroy()
        wait(5)
        debounce = false
        end
		end)
	end
end)

First of all you didn't actually play the tweens, however reading the comments suggests that it didn't work anyways. The most logical reason I have for is that you didn't parent the explosion to anything. Here is what it should look like (Not saying you don't know how to parent just in case you didn't understand me):

        local explosion = Instance.new("Part",workspace)
        explosion.Size = Vector3.new(1,1,1)
        explosion.Transparency = 0.5
        explosion.CanCollide = false
        explosion.Name = "Explosion"
        explosion.BrickColor = BrickColor.new("Really red")
        explosion.Shape = Enum.PartType.Ball
        explosion.Material = Enum.Material.Neon
        explosion.Position = CFrame.new(charging.CFrame.x,mousehit.y,charging.CFrame.z)
	--And The Parent
	explosion.Parent = charging --OR Wherever it should be parented.

REMEMBER TOO play the tweens so everything works fine. Just a reminder to keep your script working :)

This appears to be an issue on roblox's end. I've had the same issue. Check if your explosion spawns in the center of the map (0,0,0).