2x ClassicCastbars/ClassicCastbars.lua:523: attempt to concatenate local 'srcNpcID' (a nil value)
[string "@ClassicCastbars/ClassicCastbars.lua"]:523: in function <ClassicCastbars/ClassicCastbars.lua:501>
[string "=(tail call)"]: ?

Locals:
self = ClassicCastbars {
 NAME_PLATE_UNIT_REMOVED = <function> defined @ClassicCastbars/ClassicCastbars.lua:457
 StoreCast = <function> defined @ClassicCastbars/ClassicCastbars.lua:177
 CreateOrUpdateSecureFocusButton = <function> defined @ClassicCastbars/Core/Frames.lua:557
 PLAYER_ENTERING_WORLD = <function> defined @ClassicCastbars/ClassicCastbars.lua:329
 SkinPlayerCastbar = <function> defined @ClassicCastbars/Core/Frames.lua:453
 ToggleUnitEvents = <function> defined @ClassicCastbars/ClassicCastbars.lua:299
 DeleteCast = <function> defined @ClassicCastbars/ClassicCastbars.lua:222
 NAME_PLATE_UNIT_ADDED = <function> defined @ClassicCastbars/ClassicCastbars.lua:445
 DisplayCastbar = <function> defined @ClassicCastbars/Core/Frames.lua:310
 SetBorderShieldStyle = <function> defined @ClassicCastbars/Core/Frames.lua:106
 AnchorManager = <table> {
 }
 SetFocusDisplay = <function> defined @ClassicCastbars/Core/Frames.lua:605
 StartCast = <function> defined @ClassicCastbars/ClassicCastbars.lua:131
 SetCastbarFonts = <function> defined @ClassicCastbars/Core/Frames.lua:254
 CheckCastModifiers = <function> defined @ClassicCastbars/ClassicCastbars.lua:61
 SetCastbarIconAndText = <function> defined @ClassicCastbars/Core/Frames.lua:83
 ADDON_LOADED = <function> defined @ClassicCastbars/ClassicCastbars.lua:410
 CastPushback = <function> defined @ClassicCastbars/ClassicCastbars.lua:239
 StopCast = <function> defined @ClassicCastbars/ClassicCastbars.lua:147
 GROUP_ROSTER_UPDATE = <function> defined @ClassicCastbars/ClassicCastbars.lua:468
 GetCastbarFrame = <function> defined @ClassicCastbars/Core/Frames.lua:34
 LibClassicDurationsInitialized = true
 SetTargetCastbarPosition = <function> defined @ClassicCastbars/Core/Frames.lua:47
 ClearFocus = <function> defined @ClassicCastbars/Core/Frames.lua:588
 UNIT_AURA = <function> defined @ClassicCastbars/ClassicCastbars.lua:423
 db = <table> {
 }
 PLAYER_GUID = "Player-5220-01A80110"
 activeTimers = <table> {
 }
 SetCastbarStatusColorsOnDisplay = <function> defined @ClassicCastbars/Core/Frames.lua:297
 StopAllCasts = <function> defined @ClassicCastbars/ClassicCastbars.lua:168
 CreateFadeAnimationGroup = <function> defined @ClassicCastbars/Core/Frames.lua:282
 0 = <userdata>
 activeFrames = <table> {
 }
 ZONE_CHANGED_NEW_AREA = <function> defined @ClassicCastbars/ClassicCastbars.lua:344
 SetLSMBorders = <function> defined @ClassicCastbars/Core/Frames.lua:229
 SetCastbarStyle = <function> defined @ClassicCastbars/Core/Frames.lua:154
 StartAllCasts = <function> defined @ClassicCastbars/ClassicCastbars.lua:158
 defaultConfig = <table> {
 }
 HideCastbar = <function> defined @ClassicCastbars/Core/Frames.lua:352
 COMBAT_LOG_EVENT_UNFILTERED = <function> defined @ClassicCastbars/ClassicCastbars.lua:501
 GetUnitType = <function> defined @ClassicCastbars/ClassicCastbars.lua:50
 PLAYER_TARGET_CHANGED = <function> defined @ClassicCastbars/ClassicCastbars.lua:438
}
_ = 1693943524.508000
eventType = "SPELL_CAST_START"
_ = false
srcGUID = "Player-5220-01B48D18"
_ = "Deezlegtyg"
srcFlags = 4680
_ = 0
dstGUID = ""
_ = nil
dstFlags = -2147483648
_ = -2147483648
_ = 0
spellName = "Healing Wave"
_ = 8
missType = nil
spellID = 10396
castTime = 3000
icon = 136052
isSrcPlayer = false
_ = "Player"
_ = "5220"
_ = "01B48D18"
_ = nil
_ = nil
srcNpcID = nil
(*temporary) = <table> {
 Black Dragon WhelpFireball = 3050.000000
 9523Lightning Bolt = 6426.000000
 2990Lesser Heal = 1997.000000
 3269Fireball = 3004.000000
 15989Frost Breath = 7000
 3397Corru