Lua Error with ULX.

When I choose a job in DarkRP, this error comes up from ULX and spams the console:

[ERROR] lua/includes/modules/notification.lua:83: Tried to use invalid object (type Panel) (Object was NULL or not of the right type)
  1. GetWide - [C]:-1
   2. UpdateNotice - lua/includes/modules/notification.lua:83
    3. fn - lua/includes/modules/notification.lua:138
     4. unknown - addons/ulib/lua/ulib/shared/hook.lua:179


[editline]28th October 2015[/editline]

And when I type in the chatbox it won’t show the chat box and stops me from hitting escape or seeing the console or opening the Q menu.

[editline]28th October 2015[/editline]

I have figured it out, it’s the F4 Menu/Pipboy, It had a recent change to make it goaway when you die and doesn’t freeze you. The new part off that code was:

	hook.Add("PlayerDeath", "PepPlayerDeath", function(ply)

Any ideas why this makes the error at the top?