Script is giving me attempt to index local (a nil value), help?

I have a LocalScript inside the player(s), which records if a player presses, and releases a certain key, which in this case, is Z. Pressing the key fires the GomuPistolEvent and KeyHeld = true, releasing the key fires the GomuPistolEvent and KeyHeld = false. I recently had a problem, which was quickly fixed, but now I get an error at line 64: ServerScriptService.DevilFruitScripts.GomuGomu.GomuGomu:64: attempt to index local 'BodyGyro' (a nil value)

I have tried to assign the "BodyGyro" variable as an empty variable without nil, but that doesn't seem to fix it. How would I go about fixing this?

Code:

--//Services
local UserInputService = game:GetService('UserInputService')
local ReplicatedStorage = game:GetService('ReplicatedStorage')
local ServerStorage = game:GetService('ServerStorage')
local ServerScriptService = game:GetService('ServerScriptService')
local Players = game:GetService('Players')
local GomuRemotes = ReplicatedStorage.Remotes.DevilFruits:WaitForChild('GomuGomu')

--//Variables
local GomuPistolEvent = GomuRemotes.GomuPistol:WaitForChild('GomuPistolEvent')
local DamageModule = require(ServerStorage.Server.DamageService)

--//Animations
local GomuPistolAnim = Instance.new('Animation')
GomuPistolAnim.AnimationId = 'rbxassetid://2188557970'
GomuPistolAnimTrack = nil

--//Coding
GomuPistolEvent.OnServerEvent:Connect(function(PlayerWhoSent, KeyHeld)
	local Character = game.Workspace:WaitForChild(PlayerWhoSent.Name)
	local Humanoid = Character:FindFirstChildOfClass('Humanoid')
	local RightArm = Character:WaitForChild('RightLowerArm')
	local RightHand = Character:WaitForChild('RightHand')
	local LeftArm = Character:WaitForChild('LeftLowerArm')
	local LeftHand = Character:WaitForChild('LeftHand')
	local Mouse = PlayerWhoSent:GetMouse()
	local MousePosition = Mouse.Hit.p
	local Damaging = false
	local Attacking = false
	local Damage = nil
	local Cooldown = nil
	local Range = nil
	local BodyGyro = nil
	local BodyPosition = nil
	local ArmStretch = nil
	local Weld = nil

	if KeyHeld then
		GomuPistolAnimTrack = Humanoid:LoadAnimation(GomuPistolAnim)
		GomuPistolAnimTrack:Play()
		GomuPistolAnimTrack.KeyframeReached:Connect(function(Keyframe)
			if KeyHeld and Keyframe == 'Charge' then
				GomuPistolAnimTrack:AdjustSpeed(0)
			end
		end)
		print('pistolcharge')
		Attacking = true
		BodyGyro = Instance.new('BodyGyro', Character.LowerTorso)
		BodyGyro.Name = 'SkillGyro'
		BodyGyro.D = 100
		BodyGyro.MaxTorque = Vector3.new(math.huge, math.huge, math.huge)
		BodyPosition = Instance.new('BodyPosition', Character.LowerTorso)
		BodyPosition.Name = 'SkillPosition'
		BodyPosition.Position = Character.HumanoidRootPart.Position
		BodyPosition.MaxForce = Vector3.new(math.huge, math.huge, math.huge)
		while KeyHeld do
			MousePosition = Mouse.Hit.p
			BodyGyro.CFrame = CFrame.new(Character.LowerTorso.Position, MousePosition) * CFrame.Angles(0, math.rad(-90) ,0)
			wait()
		end
	elseif not KeyHeld then
		GomuPistolAnimTrack:AdjustSpeed(1)
		print('pistol')
		BodyGyro.CFrame = CFrame.new(Character.LowerTorso.Position, MousePosition)
		GomuPistolAnimTrack.KeyframeReached:Connect(function(Keyframe)
			if Keyframe == 'Pistol' then
				Damaging = true
				Damage = 25
				ArmStretch = Instance.new('Part', Character)
				ArmStretch.Name = 'ArmStretchRight'
				ArmStretch.Color = RightArm.Color
				ArmStretch.Size = RightArm.Size
				ArmStretch.CanCollide = false
				RightArm.Transparency = 1
				RightHand.Transparency = 1
				Weld = Instance.new('Weld', ArmStretch)
				Weld.Part0 = ArmStretch
				Weld.Part1 = RightArm
				Weld.C0 = CFrame.new(0, 0, 0) * CFrame.new(0, 0, 0)
			end
			if Keyframe == 'End' then
				Character.LowerTorso:WaitForChild('SkillGyro'):Destroy()
				Character.LowerTorso:WaitForChild('SkillPosition'):Destroy()
				Character:WaitForChild('ArmStretchRight'):Destroy()
				if RightArm.Transparency == 1 then RightArm.Transparency = 0 end
				if RightHand.Transparency == 1 then RightHand.Transparency = 0 end
				BodyGyro = nil
				BodyPosition = nil
				ArmStretch = nil
				Weld = nil
				Attacking = false
			end
		end)
	end

	RightArm.Touched:Connect(function(hitPart)
		if Attacking and hitPart.Parent:FindFirstChild('Humanoid') and Damaging then
			Damaging = false
			local HumanoidToDamage = hitPart.Parent:FindFirstChild('Humanoid')
			DamageModule.Combat(HumanoidToDamage, Damage)
		end
	end)
	LeftArm.Touched:Connect(function(hitPart)
		if Attacking and hitPart.Parent:FindFirstChild('Humanoid') and Damaging then
			Damaging = false
			local HumanoidToDamage = hitPart.Parent:FindFirstChild('Humanoid')
			DamageModule.Combat(HumanoidToDamage, Damage)
		end
	end)
end)