Gun server script doesnt work AND doesnt give error output?

Heres the serverscript for a gun i've been working on. But, it doesnt appear to do anything nor returns error message.

local lighting = game.Lighting
local player = nil
local ignorelist = Instance.new("Model",lighting)
local tool = script.Parent
local sanim = script:WaitForChild("Shootanim") -- theres a holding animation in a local script (which only does the holding animation)
local firepart = script.Parent:WaitForChild("firepart")
local char = nil
local sanima = nil
local sooldown = false
local gui = script:WaitForChild("GlockGUI")
local gui2 = nil
local maxstock = 60 --max stock of ammo you can carry
local ammo = 8 --ammo shot before needing to reload
local ammoreloadwait = 1 --1 seconds to reload
local reloading = false
local ammogui = gui.AmmoInfo.CurrentAmmo
local ammostockgui = gui.AmmoInfo.AmmoStock
local human = nil
tool.Equipped:Connect(function(mouse) --i didnt make the reload part yet
	player = game.Players:GetPlayerFromCharacter(script.Parent.Parent)
	char = player.Character
	if char ~= nil then
		local hum = char:FindFirstChildWhichIsA("Humanoid")
		if hum then
			human = hum
		end
	end
	gui2 = gui:Clone()
	gui2.Parent = player.PlayerGui
	--tool.Activated:Connect(function()
	mouse.Button1Down:Connect(function()
		if sooldown == true then return end
		if ammo == 0 then return end
		sooldown = true
		local hit = mouse.Hit
		local ray = Ray.new(firepart.CFrame.Position,(hit.Position - firepart.CFrame.Position).unit*300)
		local hitpart,pos = workspace:FindPartOnRay(ray,script.Parent.Parent,false,false)
		local distance = (firepart.CFrame.Position - pos).magnitude
		local trail = Instance.new("Part")
		trail.Material = Enum.Material.Neon
		trail.CanCollide = false
		trail.Anchored = true
		trail.BrickColor = BrickColor.new("Bright yellow")
		trail.Transparency = 0.25
		trail.Size = Vector3.new(0.25,0.25,distance)
		trail.CFrame = CFrame.new(firepart.CFrame.Position,pos) * CFrame.new(0,0,-distance/2)
		--game.Debris:AddItem(trail,0.5)
		sanima = human:LoadAnimation(sanim) --shooting animation
		sanima:Play()
		trail.Parent = workspace
		ammo = ammo - 1
		wait(0.267)
		sanima:Stop()
		sanima:Destroy()
		sooldown = false
	end)
end)
tool.Unequipped:Connect(function()
	if gui2 ~= nil then
		gui2:Destroy()
	end
end)

I suspect the mouse is inactive. Thank you.