Gun Problem - Hit_Player is a nil value? [closed]

I'm making a game and I was making a gun. This is the script.

wait(1)

local Seat = script.Parent

local MG = Seat.Parent
local Vehicle = MG.Parent.Parent

local W_X, W_Y = Seat.X, Seat.Y

local Events = script.Events

local SeatedWeld
local tool




Seat.ChildAdded:connect(function(weld)
    if weld.Name == "SeatWeld" and weld:IsA("Weld") then
        player = game.Players:GetPlayerFromCharacter(weld.Part1.Parent)
        if not player then
            return
        end
        SeatedWeld = weld
        tool = script["MG42"]:Clone()
        tool.Events.Value = Events
        tool.Parent = player.Backpack

-- WAT

local Camera = Workspace.CurrentCamera

local Tool = MG.Parent.MG

Settings = {
    Range = 10000
    ,Spread = 7
    ,Damage = {20, 20}
    ,HeadShotDamage = {40, 40}
    ,Bullets = 1
    ,FireRate = 1
    ,Automatic = true
    ,AntiTK = true
    ,ImpactDuration = 3
    --Reload
    ,ReloadKey = "R"
    ,ReloadTime = 2.7
    ,Ammo = 50
    ,IncludeChamberedBullet = true
    --Gui
    ,GuiPos = Vector2.new(script.Gui.Frame.Position.X.Scale, script.Gui.Frame.Position.Y.Scale)
    --Arms
    ,OneHanded = false
    ,FakeArms = true
    ,FakeArmTransparency = 0
    ,RightPos = CFrame.new(-0.75, -0.25, 0.5) * CFrame.Angles(math.rad(-90), 0, 0)
    ,LeftPos = CFrame.new(1, 0.5, 0.5) * CFrame.Angles(math.rad(-90), math.rad(45), 0)
    --,AimPart = Tool.AimPart
    ,AimPartOffset = CFrame.new()
    ,AimGripOffset = Vector3.new(0, 0, 0)
    ,LeftAimPos = CFrame.new(1, 0.5, 0.5) * CFrame.Angles(math.rad(-100), math.rad(45), 0)
    ,AimAnim = {
        Enabled = false
        ,Frames = 50
        ,Time = 0.1
    }
    ,ChangeFOV = {true, 60}
    ,SpreadReduction = 0
    --Weld
    ,Weld = true
    --Mouse
    ,Icons = {
        Idle = "rbxassetid://70288585"
        ,Fire1 = "rbxassetid://70288578"
        ,Fire2 = "rbxassetid://70288572"
        ,Fire3 = "rbxassetid://70288578"
        ,Reload = "rbxassetid://70288599"
        ,Aim = "rbxasset://textures/Blank.png"
    }
    ,FireMouseAnimTime = 0.15
    --Recoil
    ,Recoil = math.rad(1)
    --Smoke
    ,Smoke = false
    --,SmokePart = Tool.SmokePart
    ,Smokes = {{script.Smoke, 6, 0.1}, {script.Smoke1, 0.1}, {script.Smoke1, 0.1}}
    --Sprint
    ,Sprint = true
    ,SprintSpeed = 25
    ,SprintKey = "0"
    ,SprintSpreadIncrease = 40
    ,SprintArmOffset = CFrame.new(0.25, 0.125, 0.25) * CFrame.Angles(math.rad(-250), math.rad(35), 0)
    --Other
    ,DropHats = false
}

--Do not edit below this lign--

local Orig_Spread = Settings.Spread

Settings.Range = math.min(Settings.Range, 999)

local Ignore_Model = Workspace:FindFirstChild("Ray_Ignore") or Instance.new("Model", Workspace)
Ignore_Model.Name = "Ray_Ignore"

local Ray_Ignore = {Ignore_Model, Workspace.CurrentCamera, Vehicle}

Ammo = Settings.Ammo
AmmoDisplay = MG.Parent.MG.AmmoDisplay.GUI.Display
AmmoDisplay.Text = Ammo

function Fire()
    if Ammo <= 0 then
        AmmoDisplay.Text = "EMPTY"
        return
    end
    Ammo = Ammo - 1 
    AmmoDisplay.Text = Ammo
    if MG.Parent.MG.Body:FindFirstChild("Shoot") then
        MG.Parent.MG.Body.Shoot:Play()
    end
    local flash = script.Smoke1:Clone()
    flash.Parent = MG.Parent.MG.FlashPos
    flash.Enabled = true
    game.Debris:AddItem(flash, 0.07)
    local Spread = CFrame.Angles(math.rad(math.random(-Settings.Spread, Settings.Spread)/10), math.rad(math.random(-Settings.Spread, Settings.Spread)/10), math.rad(math.random(-Settings.Spread, Settings.Spread)/10))
    local Ray = Ray.new(MG.Parent.MG.FlashPos.Position, ((MG.Parent.MG.FlashPos.CFrame * CFrame.new(0, 0, 1)) * Spread).lookVector.unit * Settings.Range)
    local Hit, Pos = Workspace:FindPartOnRayWithIgnoreList(Ray, Ray_Ignore)
    if Hit and Hit.Parent:FindFirstChild("Humanoid") then
        local Hit_Player = game.Players:GetPlayerFromCharacter(Hit.Parent)
        if Settings.AntiTK and not Hit_Player.Neutral and Hit_Player.TeamColor == player.TeamColor then
            return
        end
        local Humanoid = Hit.Parent.Humanoid
        local c = Instance.new("ObjectValue")
        c.Name = "creator"
        c.Value = player
        game.Debris:AddItem(c, 3)
        c.Parent = Humanoid
        if Hit.Name == "Head" then
            Humanoid.Health = Humanoid.Health - math.random(Settings.HeadShotDamage[1], Settings.HeadShotDamage[2])
        else
            Humanoid.Health = Humanoid.Health - math.random(Settings.Damage[1], Settings.Damage[2])
        end
    elseif Hit then
        local Hit_Part = Instance.new("Part", Ignore_Model)
        local Mesh_Part = game.Lighting.Arrow:Clone()
        Mesh_Part.Parent = Hit_Part
        Hit_Part.FormFactor = "Custom"
        Hit_Part.TopSurface = 0
        Hit_Part.BottomSurface = 0
        Hit_Part.Anchored = true
        Hit_Part.CanCollide = false
        Hit_Part.Size = Vector3.new()
        Hit_Part.CFrame = CFrame.new(Pos) * CFrame.Angles(math.random(0, 360), math.random(0, 360), math.random(0, 360))
        Hit_Part.BrickColor = BrickColor.new("Brown")
        game.Debris:AddItem(Hit_Part, Settings.ImpactDuration)
        if not Hit.Anchored then
            local w = Instance.new("Weld", Hit_Part)
            w.Part0 = Hit
            w.Part1 = Hit_Part
            w.C0 = Hit.CFrame:toObjectSpace(Hit_Part.CFrame)
            Hit_Part.Anchored = false
        end
        if Hit.Parent:IsA("Hat") and Settings.DropHats then
            Hit.Parent.Parent = workspace
            game.Debris:AddItem(Hit, 3)
        end
    end
end


--WAT
    end
end)

Seat.ChildRemoved:connect(function(weld)
    if weld == SeatedWeld and tool then
        Events.Deselecting.Value = true
        wait()
        tool:Destroy()
        Events.Deselecting.Value = false
        tool = nil
    end
end)

local Keys_Down = {}

local Firing = false

Events.KeyDown.Changed:connect(function()
    if Events.KeyDown.Value ~= "" then
        Keys_Down[Events.KeyDown.Value:upper()] = true
        Events.KeyDown.Value = ""
        if Keys_Down["R"] and not Firing and not Reloading then
            Reloading = true
            AmmoDisplay.Text = "RELOADING"
            MG.Parent.MG.Body.Reload:Play()
            wait(Settings.ReloadTime)
            Ammo = Settings.Ammo
            AmmoDisplay.Text = Ammo
            Reloading = false
        end
    end
end)

Events.KeyUp.Changed:connect(function()
    if Events.KeyUp.Value ~= "" then
        Keys_Down[Events.KeyUp.Value:upper()] = false
        Events.KeyUp.Value = ""
    end
end)

local MouseHeld = false


Events.MouseHeld.Changed:connect(function()
    MouseHeld = Events.MouseHeld.Value
    if not Firing and Ammo > 0 and not Reloading then
        Firing = true
        while MouseHeld and tool do
            local out = Fire()
            if out then
                break
            end
            wait(Settings.FireRate)
        end
        Firing = false
    end
end)

local MouseHit = Events.MouseHit
local Origin = MouseHit.Origin

MouseHit.Value = Seat.CFrame + Seat.CFrame.lookVector * 1000
Origin.Value = Seat.CFrame

local Yaw = 0
local Pitch = 0

local TurnJoint = Vehicle:FindFirstChild(MG.Parent.Name .. "TurnJoint")

while wait() do
    if tool then
        local look = TurnJoint.CFrame:vectorToObjectSpace(MouseHit.Value.p - Origin.Value.p).unit
        Yaw, Pitch = math.atan2(look.x, -look.z), math.asin(look.y)
        Yaw = math.max(math.rad(-120), math.min(math.rad(120), Yaw))
        Pitch = math.max(math.rad(-10), math.min(math.rad(40), Pitch))
        W_Y.C0 = CFrame.Angles(-Pitch, 0, 0)
        W_X.C0 = CFrame.Angles(0, -Yaw, 0)
    end
end

and this is the error : 21:29:58.383 - Workspace.Model.RearMG.MGFrame.MGSeat.Gun_Script:131: attempt to index local 'Hit_Player' (a nil value) 21:29:58.384 - Stack Begin 21:29:58.385 - Script 'Workspace.Model.RearMG.MGFrame.MGSeat.Gun_Script', Line 131 - global Fire 21:29:58.385 - Script 'Workspace.Model.RearMG.MGFrame.MGSeat.Gun_Script', Line 222 21:29:58.386 - Stack End

I have no clue how to fix it, Could you shed some light?

The main problem is with line 131.