Raycast camera just returns blue. Please help?

im trying to make a camera in roblox with raytracing. it isnt working all that well. when i use it, the image comes out just as blue. can someone help? heres the server script:

--Made by AppleBLOXIAN

local folder = script.Parent
local tool = folder.Parent
local req = folder:WaitForChild("Request")
local capev = game.ReplicatedStorage:WaitForChild("OnImageCapture")
local settings = tool:WaitForChild("Settings")
local capheight = settings:WaitForChild("CaptureHeight")
local capwidth = settings:WaitForChild("CaptureWidth")

function getHex(num)
	local chars = {"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "A", "B", "C", "D", "E", "F"}
	local hex = ""
	local x = num / 16
	local y = num % 16
	
	hex = chars[math.floor(x) + 1] .. chars[math.floor(y) + 1]
	
	return hex
end

function color3ToHex(color3)
	if not color3["r"] then return "000000" end
	
	local r, g, b = color3.r * 255, color3.g * 255, color3.b * 255
	return "" .. getHex(r) .. getHex(g) .. getHex(b)
end

function capture()
	local image = {
		width = capwidth.Value,
		height = capheight.Value,
		data = {}
	}
	--init
	print("Initializing...")
	local rays; do
		rays = {}
		local halfwidth = image.width / 2
		local halfheight = image.height / 2
		local startpos = tool:WaitForChild("Handle").Position - Vector3.new(halfwidth*0.05,halfheight*0.05,0)
		print("Raycasting...")
		local cx = startpos.X
		local cy = startpos.Y
		local cpos = startpos
		for i = 1,image.height do
			for i = 1,image.width do
				local ray = Ray.new(cpos,tool:WaitForChild("Handle").CFrame.lookVector)
				local hit,pos,normal = workspace:FindPartOnRay(ray)
				if hit then
					local color = color3ToHex(hit.Color)
					image.data[#image.data+1] = color
				else
					local color = color3ToHex(Color3.fromRGB(0,255,255))
					image.data[#image.data+1] = color
				end
				cx = cx + 0.05
				cpos = Vector3.new(cx,cy,0)
			end
			cx = startpos.X
			cy = cy + 0.05
			cpos = Vector3.new(cx,cy,0)
		end
	end
	--handle image
	print("Compiling...")
	image = game:GetService("HttpService"):JSONEncode(image)
	print("Done!")
	capev:Fire(image)
end

function onServerEvent(plr,req)
	if req == "Capture" then
		capture()
	end
end

req.OnServerEvent:connect(onServerEvent)

and heres the local script:

--Made by AppleBLOXIAN

local folder = script.Parent
local tool = folder.Parent
local guis = tool:WaitForChild("GUIs")
local gui = guis:WaitForChild("ScreenGui")
local button = gui:WaitForChild("TextButton")
local req = folder:WaitForChild("Request")

function onEquip()
	gui.Parent = game.Players.LocalPlayer:WaitForChild("PlayerGui")
end

function onUnEquip()
	gui.Parent = guis
end

function onClick()
	req:FireServer("Capture")
	spawn(function()
		button.Text = "Captured"
		wait(0.5)
		button.Text = "Capture"
	end)
end

tool.Equipped:connect(onEquip)
tool.Unequipped:connect(onUnEquip)
button.MouseButton1Click:connect(onClick)

and heres another server script displaying the image on a surfacegui:

local sgui = script.Parent
local imgfolder = sgui:WaitForChild("Image")
local capev = game.ReplicatedStorage:WaitForChild("OnImageCapture")

function hexToColor3(hex)
	local r,g,b = hex:sub(1,2),hex:sub(3,4),hex:sub(5,6)
	r,g,b = tonumber(r,16),tonumber(g,16),tonumber(b,16)
	return Color3.fromRGB(r,g,b)
end

function stringSplit(s)
	local tab = {}
	for w in s:gmatch("%S+") do
		tab[#tab+1] = w
	end
	return tab
end

function renderImage(x,y,hex)
	local hextab = stringSplit(hex)
	local cx = 1
	local cy = 1
	local frm; do
		frm = Instance.new("Frame")
		frm.Size = UDim2.new(0,x,0,y)
		frm.BackgroundTransparency = 1
	end
	spawn(function()
		for i,v in pairs(hextab) do
			local pixel; do
				pixel = Instance.new("Frame",frm)
				pixel.Size = UDim2.new(0,1,0,1)
				pixel.Position = UDim2.new(0,cx-1,0,cy-1)
				pixel.BackgroundColor3 = hexToColor3(v)
				pixel.BorderSizePixel = 0
			end
			if cx == x then
				cx = 1
				cy = cy+1
				coroutine.yield()
			else
				cx = cx+1
				if cx == x/4 then
					coroutine.yield()
				end
			end
		end	
	end)
	return frm
end

function onEvent(json)
	imgfolder:ClearAllChildren()
	local imgdata = game:GetService("HttpService"):JSONDecode(json)
	local x = imgdata.width
	local y = imgdata.height
	local hex = table.concat(imgdata.data," ")
	local img = renderImage(x,y,hex)
	img.Parent = imgfolder
end

capev.Event:connect(onEvent)