View difference between Paste ID: ABfZubuX and QFPsrUWj

 local localPlayer = game:GetService("Players").LocalPlayer
 local teamCheck = true
 
 function getClosestPlayer()
     local closestPlayer = nil
     local shortestDistance = math.huge
 
     for i, v in pairs(game:GetService("Players"):GetPlayers()) do
         if v.Name ~= localPlayer.Name then
             if v.Character and v.Character:FindFirstChild("Humanoid") and v.Character.Humanoid.Health ~= 0 and v.Character:FindFirstChild("HumanoidRootPart") and v.Character:FindFirstChild("Head") and teamCheck and v.Team ~= localPlayer.Team then
                 local magnitude = (v.Character.HumanoidRootPart.Position - localPlayer.Character.HumanoidRootPart.Position).magnitude
 
                 if magnitude < shortestDistance then
                     closestPlayer = v
                     shortestDistance = magnitude
                 end
             elseif v.Character and v.Character:FindFirstChild("Humanoid") and v.Character.Humanoid.Health ~= 0 and v.Character:FindFirstChild("HumanoidRootPart") and v.Character:FindFirstChild("Head") and not teamCheck then
                 local magnitude = (v.Character.HumanoidRootPart.Position - localPlayer.Character.HumanoidRootPart.Position).magnitude
 
                 if magnitude < shortestDistance then
                     closestPlayer = v
                     shortestDistance = magnitude
                 end
             end
         end
     end
 
-    return closestPlayer or localPlayer
+    return closestPlayer
 end
 
 game:GetService("UserInputService").InputBegan:Connect(function(input, onGui)
     if not onGui and input.KeyCode == Enum.KeyCode.T then
         teamCheck = not teamCheck
     end
 end)
 
 local mt = getrawmetatable(game)
 local oldNamecall = mt.__namecall
 if setreadonly then setreadonly(mt, false) else make_writeable(mt, true) end
 local namecallMethod = getnamecallmethod or get_namecall_method
 local newClose = newcclosure or function(f) return f end
 
 mt.__namecall = newClose(function(...)
     local method = namecallMethod()
     local args = {...}
 
-    if tostring(method) == "FireServer" and tostring(args[1]) == "HitPart" then
+    if tostring(method) == "FireServer" and tostring(args[1]) == "HitPart" and getClosestPlayer().Character and getClosestPlayer().Character:FindFirstChild("Head") then
         args[2] = getClosestPlayer().Character.Head
         args[3] = getClosestPlayer().Character.Head.Position
 
         return oldNamecall(unpack(args))
     end
 
     return oldNamecall(...)
 end)
 
 if setreadonly then setreadonly(mt, true) else make_writeable(mt, false) end