Could you help me get my weapon to block with q button?

I am trying to make a sword for my game that will allow my character to block left when the q button is pressed but still play a animation to swing the sword. I haven't been scripting for long so it would be nice if you could point out all errors I have. This is the code I currently am working with. If you need any other scripts that I am working with to understand the problem I will gladly show you them. Thank you, -Peanut

local function WaitForChild(parent, childName)
	while not parent:FindFirstChild(childName) do parent.ChildAdded:wait() end
	return parent[childName]
end

local Tool = script.Parent

local Animations = {}
local MyHumanoid
local MyCharacter


local function PlayAnimation(animationName)
	if Animations[animationName] then
		Animations[animationName]:Play()
	end
end

local function StopAnimation(animationName)
	if Animations[animationName] then
		Animations[animationName]:Stop()
	end
end

function OnEquipped(mouse)
	MyCharacter = Tool.Parent
	MyHumanoid = WaitForChild(MyCharacter, 'Humanoid')
	if MyHumanoid then
		Animations['EquipAnim'] = MyHumanoid:LoadAnimation(WaitForChild(Tool, 'EquipAnim5'))
		Animations['IdleAnim'] = MyHumanoid:LoadAnimation(WaitForChild(Tool, 'IdleAnim3'))
		Animations['OverheadAnim'] = MyHumanoid:LoadAnimation(WaitForChild(Tool, 'OverheadAnim2'))
		Animations['SlashAnim'] = MyHumanoid:LoadAnimation(WaitForChild(Tool, 'SlashAnim2'))
		Animations['ThrustAnim'] = MyHumanoid:LoadAnimation(WaitForChild(Tool, 'ThrustAnim2'))
		Animations['UnequipAnim'] = MyHumanoid:LoadAnimation(WaitForChild(Tool, 'UnequipAnim2'))
		Animations['Blockleft'] = MyHumanoid:LoadAnimation(WaitForChild(Tool, 'Blockleft'))
	end
	PlayAnimation('EquipAnim')
	PlayAnimation('IdleAnim')
end

function Blockleft(key)
	PlayAnimation('Blockleft')
end


function OnUnequipped()
	for animName, _ in pairs(Animations) do
		StopAnimation(animName)
	end
end

	
		mouse.Keydown:connect(function(key))

			if key == "q" then
				Tool.Equipped:connect('BlockLeft')

	end

Tool.Equipped:connect(OnEquipped)
Tool.Unequipped:connect(OnUnequipped)

WaitForChild(Tool, 'PlaySlash').Changed:connect(
	function (value)
			PlayAnimation('SlashAnim')
	end)

WaitForChild(Tool, 'PlayThrust').Changed:connect(
	function (value)
			PlayAnimation('ThrustAnim')
	end)

WaitForChild(Tool, 'PlayOverhead').Changed:connect(
	function (value)
			PlayAnimation('OverheadAnim')
	end)

on line 56, you do this:

Tool.Equipped:connect('BlockLeft')

You're trying to connect a non-function value to the Equipped event. I don't know what you want to be executed there, but it needs to be a function, like so:

Tool.Equipped:connect(function(mouse)
	--your block code here
end)