Why are the ends at the end of my script constantly giving an error?

I have been adding to a script that is supposed to take care of when E is pressed and the mouse is hovered over a certain model/part it will add that weapon to the custom backpack I made. I have been adding the ammo part but one of my ends keep giving this one error:

Expected ")" (to close "(" at line 16), got "end"

I don't know what it means. I suggested that it wanted me to add a bracket to close the anonymous function which is what is on line 16 but there is already an end) for both of the functions. But anyway here is the script that the error is coming from:

local RunService = game:GetService("RunService")
local Player = game:GetService("Players").LocalPlayer
local uis = game:GetService("UserInputService")
local Mouse = Player:GetMouse()
local character = Player.Character
local ActiveParts = workspace:WaitForChild("Weapons")
local nextslot = character:WaitForChild("weapons").nextslot
local Tag = script.Parent
RunService.RenderStepped:connect(function()
        Tag.Position = UDim2.new(0,Mouse.X-Tag.AbsoluteSize.X,0,Mouse.Y-Tag.AbsoluteSize.Y)
    local Target = Mouse.Target
    if Target and ActiveParts:IsAncestorOf(Target) then
        Tag.Visible = true
                    else
                    Tag.Visible = false
    uis.InputBegan:connect(function(input)
        if input.KeyCode == Enum.KeyCode.E then
            local children = workspace.Weapons:GetChildren()
                for i, child in ipairs(children) do
                    if Target.Parent.Name == "weapon" then
                    Target.Parent.Rarity.Fire.Enabled = false
                    Target.Parent.Parent = character.weapons.backpack:WaitForChild("slot"..nextslot.Value)
                    script.Parent.Parent.Parent.Items:WaitForChild("slot"..nextslot.Value).hasitem.Value = true
                    print(nextslot)
                    elseif Target.Parent.Name == "ammo" then
                        print("Ammo")
                        if Target.Parent.Type == "Light" then
                            print("Light")
                        character.weapons.ammo.light.Value = character.weapons.ammo.light.Value + Target.Parent.Amount.Value
                        Target.Parent:Destroy()
                        elseif Target.Parent.Type == "Shells" then
                            print("Shells")
                        character.weapons.ammo.shells.Value = character.weapons.ammo.shells.Value + Target.Parent.Amount.Value
                        Target.Parent:Destroy()
                        elseif Target.Parent.Type == "Rockets" then
                            print("Rockets")
                        character.weapons.ammo.rockets.Value = character.weapons.ammo.rockets.Value + Target.Parent.Amount.Value
                        Target.Parent:Destroy()
                        elseif Target.Parent.Type == "Medium" then
                            print("Medium")
                        character.weapons.ammo.medium.Value = character.weapons.ammo.medium.Value + Target.Parent.Amount.Value
                        Target.Parent:Destroy()
                        elseif Target.Parent.Type == "Heavy" then
                            print("Heavy")
                        character.weapons.ammo.Heavy.Value = character.weapons.ammo.Heavy.Value + Target.Parent.Amount.Value
                        Target.Parent:Destroy()
                        end
                        end
                        end
                        end
                        end
                        end
                        end
                    end
                    end)
                    end 
                    end)

The red underline end is on line 52. Help would be appreciated.