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.