Weld not forming from Instance.new?

I want to weld a part to a HumanoidRootPart but I checked the HumanoidRootPart for a weld, and it wasn't there. I switched the parent and Part0 to the part it self and the weld wasnt in there either. Any help? I'm using Mouse.KeyDown for now to test how I want this to be, and I'll eventually switch to UserInputService.

My InvokeServer script

local player = game.Players.LocalPlayer
local CAS = game:GetService("ContextActionService")
local UIS = game:GetService("UserInputService")
local char = player.Character or player.CharacterAdded:Wait()
local BlazeRF = game.ReplicatedStorage.BlazeInvoke
local debounce = false
local Mouse = player:GetMouse()
local animation = script:WaitForChild("Animation")
	local hum = char:WaitForChild("Humanoid")
	animTrack = hum:LoadAnimation(animation)

Mouse.KeyDown:Connect(function(key)
	key = key:lower()
	if key == "q" then
		if not debounce then
			debounce = false
		
		BlazeRF:InvokeServer(Mouse.Hit.p)
		ButtonDown = Instance.new("BoolValue")
		ButtonDown.Name = "ButtonDown"
		ButtonDown.Value = true
		ButtonDown.Parent = char
		
		bg = Instance.new("BodyGyro")
		bg.D = 100
		bg.Parent = char.Torso
		bg.MaxTorque = Vector3.new(math.huge,math.huge,math.huge)
		bg.CFrame = CFrame.new(char.Torso.Position, Mouse.Hit.p)
		bg.Name = "MouseGyro"
		
		
		bp = Instance.new("BodyPosition")
		bp.Parent = char.Torso
		bp.MaxForce = Vector3.new(math.huge,math.huge,math.huge)
		bp.Position = char.Torso.Position
		bp.Name = "TorsoPosition"
		
		
		
		
		
		
		if ButtonDown.Value == true then
			
			
			
			for i = 1, 110 do
				
				bg.CFrame = CFrame.new(char.Torso.Position, Mouse.Hit.p)
				animTrack:Play()
				wait()
			
			if i == 110 then
				
				animTrack:Stop()
				bg:Destroy()
			end
			
			if ButtonDown.Value == false then
				bg:Destroy()
				animTrack:Stop()
			end
			end
			
			
			
			
		end
		
		
		
		
		
		wait(2)
		
		debounce = false
		end
	end
	end)

Mouse.KeyUp:Connect(function(key)
	key = key:lower()
	if key == "q" then
		ButtonDown.Value = false
		bg:Destroy()
		
		bp:Destroy()
		animTrack:Stop()
	end
end)

My ServerScript

game.ReplicatedStorage.BlazeInvoke.OnServerInvoke = function(plr, MouseHit)
	
	print("Working!")
	--Variables--
	local char = plr.Character
	print(char)
	local RootPart = char:WaitForChild("HumanoidRootPart")
	local animation = script:WaitForChild("Animation")
	local hum = char.Humanoid
	animTrack = hum:LoadAnimation(animation)
	local hitdebounce = false
	repeat wait() until char
	circle = game.ReplicatedStorage.MagicItems.MagicCircles.BlazeMagic.BlazeCircle:Clone()
		circle.Size = Vector3.new(1.353, 1.3, 0.265)
		circle.Parent = game.Workspace.CustomDebris
		circle.Anchored = true
		circle.CanCollide = false
		circle.Transparency = 1
		circle.CFrame = char.HumanoidRootPart.CFrame * CFrame.new(1.5,0,-2)
	
	local Weld = Instance.new("Weld")
		Weld.Parent = RootPart
		Weld.Part0 = RootPart
		Weld.Part1 = circle
		Weld.C0 = CFrame.new(1.5,0,-2)
		print(Weld.Part1)
		repeat wait() until Weld
		for i = 1, 15 do
			
			circle.Size = circle.Size + Vector3.new(.4,.4,0)
			
			
			wait()
			
			
			end



end