I got an error when executing the script, anyone can help fix it?

Trying to make an ice move for my game, but it keeps giving me this error Error : https://media.discordapp.net/attachments/812374695545667615/815924831198511154/unknown.png

Script:

local ReplicatedStorage = game:WaitForChild("ReplicatedStorage")
local Remote = game.ReplicatedStorage.Events:WaitForChild("IceRemote")
	
	
	
Remote.OnServerEvent:Connect(function(player)
	local Character = player.Character
	local RootPart = Character:WaitForChild("HumanoidRootPart")
	local folder = workspace:FindFirstChild("DebrisFolder") or Instance.new("Folder",workspace)
	folder.Name = "DebrisFolder"
	
	local Position = Instance.new("BodyVelocity",RootPart)
	Position.MaxForce = Vector3.new(99999999999999999999,99999999999999999999,99999999999999999999)
	Position.P = 300
	Position.Velocity = RootPart.CFrame.LookVector * .1
	game.Debris:AddItem(Position,2)
	
	local val = -4
	local sizez = 3
	local sizex = 10
	local sideval = .5
	
	local function Ice()
		local extra = math.random(-11,11)/10
		local Shard = game.ReplicatedStorage.IceRemoteEffects:WaitForChild("IceShard"):Clone()
		local side = math.random(-sideval,sideval)
		up = Shard.Size.Y/2
		local rotate = math.random(0,180)
		
		local MRo = math.random(99,100)
		if MRo == 99 then
			local SRo = math.random(8,10)/10
			URo = MRo + SRo
		else
			local SRo = math.random(1,3)/10
			URo = MRo + SRo
		end
		
		
		
		Shard.Size = Vector3.new(sizez,sizex,sizez)
		Shard.CFrame = RootPart.CFrame.new(side,-up.val + extra)
		Shard.Parent = folder
		Shard.CFrame = Shard.CFrame * CFrame.fromEulerAnglesXYZ(URo,rotate,0.4)
		
	
		val = val - 2
		sizez = sizez + 1
		sizex = sizex + 1
		sideval = sideval + .5
		game.Debris:AddItem(Shard,5)
		
	
	
	spawn(function()
		wait(.5)
		local TweenService = game:GetService("TweenService")
		
		local TweenInform = TweenInfo.new(
			.3,
			Enum.EasingStyle.Linear,
			Enum.EasingDirection.Out,
			0,
			false,
			0
		    )
		
		local Properties = {
			CFrame = Shard.CFrame * CFrame(0,up * 1.5, 0)
		}
		
		local Tween = TweenService:Create(Shard,TweenInform,Properties)
			Tween:Play()
			
		
	end)
	
	
	end
	
	
for i = 1,50 do
	Ice()
	wait()
	end
	
	
	
	
	
	
	
end)

At line 42 you tried to do RootPart.CFrame.new, which you can’t do. I’m assuming you tried to multiply CFrames.

local ReplicatedStorage = game:WaitForChild("ReplicatedStorage")
local Remote = game.ReplicatedStorage.Events:WaitForChild("IceRemote")




Remote.OnServerEvent:Connect(function(player)
    local Character = player.Character
    local RootPart = Character:WaitForChild("HumanoidRootPart")
    local folder = workspace:FindFirstChild("DebrisFolder") or Instance.new("Folder",workspace)
    folder.Name = "DebrisFolder"

    local Position = Instance.new("BodyVelocity",RootPart)
    Position.MaxForce = Vector3.new(99999999999999999999,99999999999999999999,99999999999999999999)
    Position.P = 300
    Position.Velocity = RootPart.CFrame.LookVector * .1
    game.Debris:AddItem(Position,2)

    local val = -4
    local sizez = 3
    local sizex = 10
    local sideval = .5

    local function Ice()
        local extra = math.random(-11,11)/10
        local Shard = game.ReplicatedStorage.IceRemoteEffects:WaitForChild("IceShard"):Clone()
        local side = math.random(-sideval,sideval)
        up = Shard.Size.Y/2
        local rotate = math.random(0,180)

        local MRo = math.random(99,100)
        if MRo == 99 then
            local SRo = math.random(8,10)/10
            URo = MRo + SRo
        else
            local SRo = math.random(1,3)/10
            URo = MRo + SRo
        end



        Shard.Size = Vector3.new(sizez,sizex,sizez)
        Shard.CFrame = RootPart.CFrame * CFrame.new(side,-up.val + extra)
        Shard.Parent = folder
        Shard.CFrame = Shard.CFrame * CFrame.fromEulerAnglesXYZ(URo,rotate,0.4)


        val = val - 2
        sizez = sizez + 1
        sizex = sizex + 1
        sideval = sideval + .5
        game.Debris:AddItem(Shard,5)



    spawn(function()
        wait(.5)
        local TweenService = game:GetService("TweenService")

        local TweenInform = TweenInfo.new(
            .3,
            Enum.EasingStyle.Linear,
            Enum.EasingDirection.Out,
            0,
            false,
            0
            )

        local Properties = {
            CFrame = Shard.CFrame * CFrame(0,up * 1.5, 0)
        }

        local Tween = TweenService:Create(Shard,TweenInform,Properties)
            Tween:Play()


    end)


    end


for i = 1,50 do
    Ice()
    wait()
    end







end)