Creating a blinding effect using BloomEffect?

So I'm trying to make it so that in a certain radius, players near the exploded object will be temporary blinded using BloomEffect. The problem is I'm getting this error in the output:

"Workspace.ChargedProjectile.FiredProjectile.Decimate:27: bad argument #2 to '?' (Vector3 expected, got nil)"

Because of this, my script isn't working. Please help!

Here is the code inside the object that will explode

local proj = script.Parent

flashEvent = Instance.new("RemoteEvent")
flashEvent.Parent = game.ReplicatedStorage
flashEvent.Name = "FlashEvent"

function Explode(site)
for _,player in next,game.Players:GetPlayers() do
if player.Character then
local char = player.Character
if (char.Torso.Position - site).magnitude <= 500 then
game.ReplicatedStorage.FlashEvent:FireClient(player)
end
end
end
end

function decimate()
	local propellant = Instance.new("BodyVelocity")
	propellant.Parent = proj
	propellant.Velocity = Vector3.new(0,1000,0)
	wait(1)
	Explode()
	local explosion = Instance.new("Explosion")
	explosion.Parent = game.Workspace
	explosion.Position = proj.Position
	proj:Destroy()
end

decimate()

Please note where it fires the client, it connects to a local script which activates the blinding effect. No issues occur on that local script, just this one.