Why is my Anti-Virus erroring?

I have conducted many tests, but the code does not work, I have changed a few things in the script, but it still does not work, the Output says `18:42:02.523 - local VirusNames = {"Script"} local Viruses = 0

local func:6: attempt to call method 'GetChildren' (a nil value) 18:42:02.524 - Stack Begin 18:42:02.525 - Script 'local VirusNames = {"Script"} local Viruses = 0

local func', Line 6 - upvalue ChkScan 18:42:02.526 - Script 'local VirusNames = {"Script"} local Viruses = 0

local func', Line 12 - local ChkScan 18:42:02.527 - Script 'local VirusNames = {"Script"} local Viruses = 0

local func, Line 16 18:42:02.527 - Stack End`, but, I don't know what I'm doing wrong, here is the script;

local VirusNames = {"Script"}
local Viruses = 0

local function ChkScan(Object)
for i,v in pairs(VirusNames) do
for i,v2 in pairs(Object:GetChildren()) do
pcall(function() local ChkName = v2.Name end)
if v2.Name:lower() == v:lower() then
Viruses = Viruses + 1
end
end
ChkScan(v) --Originally at line 11
end
end

ChkScan(game.Workspace)
print(Viruses)

GetChildren is a nil value.

That tells us that Object.GetChildren is nil, in other words, Object is a table or string, not a ROBLOX object.

If we look, that is in fact the case. ChkScan(v) requests a scan of v, an element of VirusNames, which is a string.