Every time I click on the Invite button I'm receiving this LUA error:

Message: Interface\AddOns\GuildRaidAttendance\Frames\Main.lua:188: attempt to call global 'ConvertToRaid' (a nil value)
Time: Fri Dec 11 00:51:48 2020
Count: 2
Stack: Interface\AddOns\GuildRaidAttendance\Frames\Main.lua:188: attempt to call global 'ConvertToRaid' (a nil value)
[string "@interface\AddOns\RCLootCouncil\Classes\Services\ErrorHandler.lua"]:149: in function <...dOns\RCLootCouncil\Classes\Services\ErrorHandler.lua:147>
[string "=[C]"]: in function `ConvertToRaid'
[string "@interface\AddOns\GuildRaidAttendance\Frames\Main.lua"]:188: in function <Interface\AddOns\GuildRaidAttendance\Frames\Main.lua:187>

Locals: private =

{
ThrowError = defined @interface\AddOns\RCLootCouncil\Classes\Services\ErrorHandler.lua:48
DoesErrorExist = defined @interface\AddOns\RCLootCouncil\Classes\Services\ErrorHandler.lua:90
ClearOldErrors = defined @interface\AddOns\RCLootCouncil\Classes\Services\ErrorHandler.lua:110
SanitizeLine = defined @interface\AddOns\RCLootCouncil\Classes\Services\ErrorHandler.lua:86
MAX_STACK_DEPTH = 10
log = {
}
ErrorHandler = defined @interface\AddOns\RCLootCouncil\Classes\Services\ErrorHandler.lua:119
IncrementErrorCount = defined @interface\AddOns\RCLootCouncil\Classes\Services\ErrorHandler.lua:80
NewError = defined @interface\AddOns\RCLootCouncil\Classes\Services\ErrorHandler.lua:52
IsRCLootCouncilError = defined @interface\AddOns\RCLootCouncil\Classes\Services\ErrorHandler.lua:97
}
orig_errorhandler = defined @interface\SharedXML\SharedBasicControls.lua:355