Child is not a valid member of character after they die?

I have this here script that is supposed to grab players when the vampire player touches them while in beast mode. But the problem is that when a player dies (grabbed player or vampire player) the script starts bugging out and saying that the child of the character is not valid. Any way to work around this?

pictures of errors

local grabblock = script.Parent.Torso
local vampchar = script.Parent
local vampplayer = game.Players:GetPlayerFromCharacter(vampchar)
local BeastEvent = game.ReplicatedStorage.Events.BeastMode
local cd = false
local players = game:GetService("Players")
if vampchar.charactervalues:WaitForChild("Role").Value ~= "Vampire" then 
	script.Disabled = true
end
grabblock.Touched:Connect(function(v1)
	local v2 = v1.Parent
	local v3 = players:GetPlayerFromCharacter(v2)
	if vampchar:FindFirstChild("charactervalues").Grabbing.Value == true then return end
   if v2:FindFirstChild("Humanoid") then
		if vampchar.charactervalues.BeastMode.Value == true and v2.charactervalues.Role.Value ~= "Vampire" and vampchar.charactervalues.Grabbing ~= true and v2.Humanoid.Health ~= 0 and (not v2:FindFirstChild("FF")) and (v2.charactervalues.Grabbed.Value ~=true) then
			if not cd then
				cd = true
				--changing values
		vampchar.Humanoid:LoadAnimation(script.Grab):Play()
				vampchar.charactervalues.Grabbing.Value = true
				--vampchar.charactervalues.GrabbingWho.Value = v2.Name
				v2.charactervalues.Grabbed.Value = true

				--v2.charactervalues.GrabbedBy.Value = vampchar.Name
			--grab jumpscare sound
		local bsound = game.ServerStorage.CaughtSnd:Clone()
		bsound.Parent = vampchar.HumanoidRootPart
		bsound.Playing = true
				spawn(function()
				task.wait(7)
				bsound:Destroy()
				end)
				local screamnum = math.random(1,2)
				if screamnum == 1 then
					local scream1 = game.ServerStorage.Scream1:Clone()
					scream1.Parent = v2:FindFirstChild("HumanoidRootPart")
					scream1.Playing = true
					spawn(function()
						task.wait(7)
						scream1:Destroy()
					end)
				elseif screamnum == 2 then
					local scream2 = game.ServerStorage.Scream2:Clone()
					scream2.Parent = v2:FindFirstChild("HumanoidRootPart")
					scream2.Playing = true
					spawn(function()
						task.wait(7)
						scream2:Destroy()
					end)
				end
				
		local moveto = game.ServerStorage.GrabWeld:Clone()
		moveto.Parent = vampchar
			moveto.Attachment0 = v2.Torso.GrabAttatch
				moveto.Attachment1 = vampchar.Torso.GrabAttatch
			end
			vampchar.charactervalues.BeastMode.Changed:Connect(function()
				if vampchar.charactervalues.BeastMode.Value == false and vampchar.charactervalues.Grabbing.Value == true then
					v2.charactervalues:WaitForChild("Grabbed").Value = false
					--v2.charactervalues:WaitForChild("GrabbedBy").Value = ""
				end
			end)
		wait(5)
		cd = false
		end
		
		local progress = v2.charactervalues:WaitForChild("EscapeProgress")
		local grabbed = v2.charactervalues:WaitForChild("Grabbed")
		--local grabbedby = v2.charactervalues:WaitForChild("GrabbedBy")
		local grabbing = vampchar.charactervalues:WaitForChild("Grabbing")
		--local grabbingwho = vampchar.charactervalues:WaitForChild("GrabbingWho")
		local beast = vampchar.charactervalues:WaitForChild("BeastMode")
		local anim = v2.Humanoid:LoadAnimation(script.Escape)
		progress.Changed:Connect(function()
			if progress.Value == 100 and grabbed.Value == true then
				anim:Play()
				local ff = Instance.new("ForceField")
				ff.Name = "FF"
				ff.Parent = v2
				spawn(function()
					wait(1)
					ff:Destroy()
				end)
				beast.Value = false
				progress.Value = 0
				grabbing.Value = false
				--grabbingwho.Value = ""
				grabbed.Value = false
				--grabbedby.Value = ""
				vampchar.Head.face.Transparency = 0
				vampchar.Head.Decal.Transparency = 1
				vampchar:WaitForChild("Humanoid:").PlatformStand = true
			end
			spawn(function()
				wait(2)
				vampchar:WaitForChild("Humanoid:").PlatformStand = false
			end)
		end)


		--[[
		vampchar.BeastMode.Changed:Connect(function()
			if vampchar.BeastMode.Value == false and grabbedchar.Parent:FindFirstChild("Grabbed").Value == true then
				grabbedchar.Parent.Grabbed.Value = false
				grabbedchar.Parent.GrabbedBy.Value = ""
			end
		end)
		]]
		
		local humanoidvamp = vampchar:WaitForChild("Humanoid")
		local hymanoid = v2:WaitForChild("Humanoid")
		local vampvalues = vampchar:WaitForChild("charactervalues")
			v2.Humanoid.Died:Connect(function()
			if vampvalues.Role.Value ~= "Vampire" then return end
			vampvalues.BeastMode.Value = false
			vampvalues.Grabbing.Value = false
				--	vampchar.charactervalues.GrabbingWho.Value = ""
				vampchar.Head.face.Transparency = 0
				vampchar.Head.Decal.Transparency = 1
				humanoidvamp.WalkSpeed = 16
		end)
			
			v2.Humanoid.HealthChanged:Connect(function()
			if v2.Humanoid.Health <10 and vampchar.charactervalues.Infect.Value == true and v2.charactervalues.Role.Value == "Survivor" and v2.charactervalues.Grabbed.Value == true and vampchar.charactervalues.Grabbing.Value == true then
					print("bruh")
						vampchar.charactervalues.Infect.Value = false
						beast.Value = false
						progress.Value = 0
						grabbing.Value = false
						--grabbingwho.Value = ""
				grabbed.Value = false
				v2.charactervalues.Infect.Value = false
						--grabbedby.Value = ""
						vampchar.Head.face.Transparency = 0
						vampchar.Head.Decal.Transparency = 1
						hymanoid.PlatformStand = true
				v2.charactervalues.Role.Value = "Vampire"
				v2.Humanoid.Health = v2.Humanoid.MaxHealth
				game.ServerStorage.Transformed:Clone().Parent = v3.PlayerGui
				spawn(function()
							wait(2)
					hymanoid.PlatformStand = false
					end)

				end
			end)

			
		

end
end)

There was a ragdoll script that i was using that deleted the character's humanoid on death. I removed the script and will now look for a different one or make my own.