Describe the bug

Do you have an error log of what happened?

Date: 2020-09-03 22:08:49
ID: 1
Error occured in: Global
Count: 1
Message: ...s\WeakAuras\Libs\LibGetFrame-1.0\LibGetFrame-1.0.lua line 230:
   bad argument #1 to 'pairs' (table expected, got nil)
Debug:
   [C]: pairs()
   ...s\WeakAuras\Libs\LibGetFrame-1.0\LibGetFrame-1.0.lua:230: GetUnitFrame()
   ...erface\AddOns\WeakAuras\RegionTypes\DynamicGroup.lua:370:
      ...erface\AddOns\WeakAuras\RegionTypes\DynamicGroup.lua:366
   ...erface\AddOns\WeakAuras\RegionTypes\DynamicGroup.lua:521: growFunc()
   ...erface\AddOns\WeakAuras\RegionTypes\DynamicGroup.lua:1142: DoPositionChildren()
   ...erface\AddOns\WeakAuras\RegionTypes\DynamicGroup.lua:1023: PositionChildren()
   ...erface\AddOns\WeakAuras\RegionTypes\DynamicGroup.lua:1004: SortUpdatedChildren()
   ...erface\AddOns\WeakAuras\RegionTypes\DynamicGroup.lua:811: Resume()
   WeakAuras\WeakAuras.lua:6412:
      WeakAuras\WeakAuras.lua:6371
   WeakAuras\WeakAuras.lua:6488: UpdatedTriggerState()
   WeakAuras\BuffTrigger2.lua:1357:
      WeakAuras\BuffTrigger2.lua:1349
   WeakAuras\BuffTrigger2.lua:1673:
      WeakAuras\BuffTrigger2.lua:1666
Locals:
(*temporary) = nil
(*temporary) = "table expected, got nil"
 = <function> defined =[C]:-1

AddOns:
  Swatter, v8.2.6377 (SwimmingSeadragon)
  AraBrokerGuildFriends, vr81
  Atlas, vv1.47.03.11304.00
  AtlasClassicWoW, vv1.47.02.11304.00
  AtlasLootClassic, vv1.5.5
  AtlasLootClassicData, vv1.5.5
  AtlasLootClassicDungeonsAndRaids, vv1.5.5
  AucAdvanced, v8.2.6430 (SwimmingSeadragon)
  AucFilterBasic, v8.2.6364 (SwimmingSeadragon)
  AucStatHistogram, v8.2.6366 (SwimmingSeadragon)
  AucStatiLevel, v8.2.6370 (SwimmingSeadragon)
  AucStatPurchased, v8.2.6367 (SwimmingSeadragon)
  AucStatSimple, v8.2.6399 (SwimmingSeadragon)
  AucStatStdDev, v8.2.6369 (SwimmingSeadragon)
  AucUtilFixAH, v8.2.6371 (SwimmingSeadragon)
  Auctionator, v100.0.9
  BagBrother, v
  Bagnon, v8.3.8
  BCT, v1.37
  BeanCounter, v8.2.6434 (SwimmingSeadragon)
  BigWigs, vv15-classic
  BigWigsAhnQirajRuins, v
  BigWigsCore, v
  BigWigsPlugins, v
  BootyBayGazette, v6.2.20200831
  BrokerDurabilityInfo, vv1.29
  BrokerMoneyFu, v80205-2
  BrokerPortals, v1.10.4
  ChocolateBar, vv3.3.4
  ClassicCastbars, vv1.3.11
  ClassicCastbarsOptions, v
  Clique, vv1.0.3-classic
  CommunityDKP, v3.2.2
  CoordsTracking, vv2.15.11305.00
  DBMStatusBarTimers, v
  Details, v
  DetailsTinyThreat, v
  Dominos, v8.3.12
  DominosCast, v
  DominosProgress, v
  DominosRoll, v
  Enchantrix, v8.2.6428 (SwimmingSeadragon)
  EnchantrixBarker, v8.2.6469 (SwimmingSeadragon)
  ExRT, v4160
  ExtendedCharacterStats, v2.5.0
  FishingBuddy, v0.7.3 Beta 7
  GlobalIgnoreList, v1.13.3
  Grid2, vr966
  Grid2LDB, vr966
  Grid2RaidDebuffs, vr966
  GTFO, v4.55
  InFlightLoad, v1.13.005
  Informant, v8.2.6374 (SwimmingSeadragon)
  ItemRack, v
  LeatrixPlus, v1.13.77
  NauticusClassic, v1.3.1
  NovaWorldBuffs, v1.79
  PostalClassic, vv3.6.2
  Prat30, v3.8.26
  Prat30Libraries, v
  Questie, v6.0.5
  RareAware, v1.0
  Regen, v0.1.4
  SaladCthun, v1.01
  ShadowedUnitFrames, vv4.2.3-Classic
  SkilletClassic, v1.16
  StealYourCarbon, v
  Stubby, v8.2.6376 (SwimmingSeadragon)
  ThreatClassic2, v2.23
  TinyTooltip, v8.2.1
  TradeSkillWhisperLookup, v0.2.6-beta
  WaterDispenser, v1.10
  WeakAuras, v2.18.3
  WIM, v3.8.14
  zzInfoclock, v
  BlizRuntimeLib_enUS v1.13.5.11305 <none>
  (ck=850)

To Reproduce

updated to 2.18.3-classic - this is an on-load error

Screenshots

Did you try having WeakAuras as the only enabled addon and everything else (especially something like ElvUI) disabled?

Which version of WeakAuras are you using?

Are you on World of Warcraft Classic or Retail?

• [x] Classic
• Retail
• Shadowlands

Was it working in a previous version? If yes, which was the last good one?

Additional Info

WeakAurasLua.zip

I am getting the same crash but with a different trigger
Stacktrace:

1x ...s\WeakAuras\Libs\LibGetFrame-1.0\LibGetFrame-1.0-21.lua:230: bad argument #1 to 'pairs' (table expected, got nil)
[C]: in function pairs' ...s\WeakAuras\Libs\LibGetFrame-1.0\LibGetFrame-1.0-21.lua:230: in function GetUnitFrame'
WeakAuras\WeakAuras-2.18.3.lua:7362: in function <WeakAuras\WeakAuras.lua:7325>
WeakAuras\WeakAuras-2.18.3.lua:7425: in function AnchorFrame' ...aceWeakAuras\RegionTypes\RegionPrototype.lua:857: in function Expand'
WeakAuras\WeakAuras-2.18.3.lua:6324: in function <WeakAuras\WeakAuras.lua:6318>
WeakAuras\WeakAuras-2.18.3.lua:6404: in function <WeakAuras\WeakAuras.lua:6371>
WeakAuras\WeakAuras-2.18.3.lua:6488: in function `UpdatedTriggerState'
WeakAuras\BuffTrigger2.lua:1357: in function <WeakAuras\BuffTrigger2.lua:1349>
WeakAuras\BuffTrigger2.lua:1673: in function <WeakAuras\BuffTrigger2.lua:1666>

Locals:
(*temporary) = nil
(*temporary) = "table expected, got nil"
= defined =[C]:-1

Addons:
$ ls AddOns/
'!BugGrabber'/ DBM-CustomSounds/ HealBot_Tips/ Questie/
'!MoncaiCompare'/ DBM-DefaultSkin/ HealBot_tw/ ShadowedUF_Options/
+Wowhead_Looter/ DBM-GUI/ ItemRack/ ShadowedUnitFrames/
AtlasLootClassic/ DBM-MC/ ItemRackOptions/ TalentSequence/
AtlasLootClassic_Collections/ DBM-Naxx/ Leatrix_Maps/ TipTac/
AtlasLootClassic_Crafting/ DBM-Onyxia/ Leatrix_Plus/ TipTacItemRef/
AtlasLootClassic_Data/ DBM-Party-Classic/ MikScrollingBattleText/ TipTacOptions/
AtlasLootClassic_DungeonsAndRaids/ DBM-StatusBarTimers/ Misc/ TitanClassic/
AtlasLootClassic_Factions/ DBM-ZG/ MoreStopwatches/ TitanClassicAmmo/
AtlasLootClassic_Maps/ Details/ MSBTOptions/ TitanClassicBag/
AtlasLootClassic_Options/ Details_DataStorage/ NeatPlates/ TitanClassicClock/
AtlasLootClassic_PvP/ Details_Streamer/ NeatPlates_Alvara/ TitanClassicGold/
aux-addon/ Details_TinyThreat/ NeatPlates_BlizzardPlates/ TitanClassicLocation/
BagBrother/ DropTheCheapestThing/ NeatPlates_ClassicPlates/ TitanClassicLootType/
Bagnon/ GettingThingsHealed/ NeatPlates_Graphite/ TitanClassicPerformance/
Bagnon_Config/ GrimoireKeeper/ NeatPlates_Grey/ TitanClassicRegen/
Bagnon_GuildBank/ HealBot/ NeatPlates_Neon/ TitanClassicRepair/
Bagnon_VoidStorage/ HealBot_br/ NeatPlates_Quatre/ TitanClassicVolume/
Bartender4/ HealBot_cn/ NeatPlates_Renaitre/ TitanClassicXP/
BugSack/ HealBot_Data/ NeatPlates_Roth/ tullaCC/
CEPGP/ HealBot_de/ NeatPlates_Simple/ ViragDevTool/
CharacterStatsClassic/ HealBot_en/ NeatPlates_Slim_Horizontal/ WeakAuras/
ClassicAuraDurations/ HealBot_es/ NeatPlates_Slim_Vertical/ WeakAurasArchive/
ClassicCodex/ HealBot_ExtraSkins/ NeatPlatesHub/ WeakAurasCompanion/
ClassTrainerPlus/ HealBot_fr/ NeatPlatesWidgets/ WeakAurasModelPaths/
ColorPickerPlus/ HealBot_gr/ PoliteWhisper/ WeakAurasOptions/
DBM-AQ20/ HealBot_hu/ Prat-3.0/ WeakAurasTemplates/
DBM-AQ40/ HealBot_it/ Prat-3.0_Libraries/ WhatsTraining/
DBM-Azeroth/ HealBot_kr/ Quartz/
DBM-BWL/ HealBot_Options/ QuestFrameFixer/
DBM-Core/ HealBot_ru/ QuestIconDesaturation/

Observations:
It seems to happen whenever I apply a buff to myself.

This is fixed upstream, WeakAuras needs a new tag to include fixed LibGetFrame

fixed in WeakAuras 2.18.4