Workspace.Part.Damage:21: invalid argument #1 to 'find' (table expected, got Instance)?

local waitTime = 0.2
local Debounce = false
local Char = {}

local function Touched(hit)
    if not Debounce then
        if not hit.Parent:FindFirstChild("Humanoid") then return end
        Debounce = true
        hit.Parent:SetAttribute("Damage", true)
        table.insert(Char, hit.Parent)
        wait(waitTime)
        Debounce = false
    end
end

local function TouchEnded(hit)
    if not Debounce then
        if not hit.Parent:FindFirstChild("Humanoid") then return end
        Debounce = true
        hit.Parent:SetAttribute("Damage", false)
        table.remove(Char, table.find(hit.Parent))
        wait(waitTime)
        Debounce = false
    end
end

script.Parent.Touched:Connect(Touched)
script.Parent.TouchEnded:Connect(TouchEnded)

while task.wait(waitTime) do
    if table.getn(Char) > 0 then
        for _, Plr in pairs(Char) do
            if Plr:GetAttribute("Damage") == true then
                Plr.Humanoid:TakeDamage(10)
            end
        end
    end
end

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