WowAce

What exactly is wrong?

 UI pane errors

What steps will reproduce the problem?
1. scan pets.

2. set filter to world events only

3. hit expand all button

Any additional information?

this error is due to a function being passed a nil instead of an expected string.

/collectinator/utilities.lua@55:
return ("|cff%s%s|r"):format(color_code or "ffffff", text)

this should be:

return ("|cff%s%s|r"):format(color_code or "ffffff", text or "")

If you get an error, please paste the ENTIRE thing here:

Message: Interface\AddOns\Collectinator\Utilities.lua:55: bad argument #2 to 'format' (string expected, got nil)
Time: Thu Jan 21 22:43:27 2021
Count: 6
Stack: Interface\AddOns\Collectinator\Utilities.lua:55: bad argument #2 to 'format' (string expected, got nil)
[string "=[C]"]: in function `format'
[string "@Interface\AddOns\Collectinator\Utilities.lua"]:55: in function <Interface\AddOns\Collectinator\Utilities.lua:54>
[string "@Interface\AddOns\Collectinator\Interface\List.lua"]:1188: in function `func'
[string "@Interface\AddOns\Collectinator\Interface\List.lua"]:1379: in function <Interface\AddOns\Collectinator\Interface\List.lua:1328>
[string "@Interface\AddOns\Collectinator\Interface\List.lua"]:1518: in function `ExpandEntry'
[string "@Interface\AddOns\Collectinator\Interface\List.lua"]:450: in function `InsertEntry'
[string "@Interface\AddOns\Collectinator\Interface\Tabs.lua"]:410: in function `Initialize'
[string "@Interface\AddOns\Collectinator\Interface\List.lua"]:790: in function `Initialize'
[string "@Interface\AddOns\Collectinator\Interface\List.lua"]:850: in function `Update'
[string "@Interface\AddOns\Collectinator\Interface\Panel.lua"]:770: in function <Interface\AddOns\Collectinator\Interface\Panel.lua:753>

Locals: (*temporary) = "|cff%s%s"
(*temporary) = "80590e"
(*temporary) = nil
(*temporary) = "string expected, got nil"