Error, happens sometimes

[bullsei]

Hi, i sometimes get this error message:
1x Capping\core.lua:78: attempt to index local 'parent' (a nil value) Capping\core.lua:78: in function <Capping\core.lua:77> Capping\core.lua:715: in function CreateText'
Capping\core.lua:702: in function `?'
Capping\core.lua:36: in function <Capping\core.lua:35>

Locals:
parent = nil
font = "GameFontNormal"
fontsize = 10
justifyH = "CENTER"
justifyV = "CENTER"
overlay = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = "attempt to index local 'parent' (a nil value)"
`