WowAce

About two weeks ago, I started getting LUA errors for Gathermate, which I ignored, and then starting about a week ago, the herbs in my world and minimap stopped showing up altogether. I tried toggling the hide settings in Gathermate and in ElvUI (minimap tracking option), to no avail. I updated Gathermate2 and imported the most recent data, and nothing. Eventually, I removed the addon, deleted the saved variables for it in the WTF folder, and then reinstalled and imported the data.

This final step allowed the herb points to show up on my World Map, but nothing I do seems to get it to show up on my Minimap. 

I'm still getting LUA errors. To be clear, this is WoW classic. The most recent follows:

Date: 2020-12-05 13:31:01
ID: 1
Error occured in: Global
Count: 1
Message: ..\AddOns\GatherMate2\Collector.lua line 30:
   table index is nil
Debug:
   GatherMate2\Collector.lua:30: in main chunk
Locals:
GatherMate = <table> {
 DeleteNode2 = <function> defined @Interface\AddOns\GatherMate2\GatherMate2.lua:294
 SetDefaultModuleLibraries = <function> defined @Interface\AddOns\BCT\Libs\AceAddon-3.0\AceAddon-3.0.lua:367
 CleanupDB = <function> defined @Interface\AddOns\GatherMate2\GatherMate2.lua:472
 IsCleanupRunning = <function> defined @Interface\AddOns\GatherMate2\GatherMate2.lua:447
 Enable = <function> defined @Interface\AddOns\BCT\Libs\AceAddon-3.0\AceAddon-3.0.lua:294
 RegisterChatCommand = <function> defined @Interface\AddOns\Atlas\Libs\AceConsole-3.0\AceConsole-3.0.lua:85
 EnableModule = <function> defined @Interface\AddOns\BCT\Libs\AceAddon-3.0\AceAddon-3.0.lua:332
 modules = <table> {
 }
 GetModule = <function> defined @Interface\AddOns\BCT\Libs\AceAddon-3.0\AceAddon-3.0.lua:210
 IterateEmbeds = <function> defined @Interface\AddOns\BCT\Libs\AceAddon-3.0\AceAddon-3.0.lua:442
 defaultModuleLibraries = <table> {
 }
 GetIDForNode = <function> defined @Interface\AddOns\GatherMate2\GatherMate2.lua:383
 UnregisterChatCommand = <function> defined @Interface\AddOns\Atlas\Libs\AceConsole-3.0\AceConsole-3.0.lua:111
 MapLocalize = <function> defined @Interface\AddOns\GatherMate2\GatherMate2.lua:527
 ClearDB = <function> defined @Interface\AddOns\GatherMate2\GatherMate2.lua:206
 Printf = <function> defined @Interface\AddOns\Atlas\Libs\AceConsole-3.0\AceConsole-3.0.lua:69
 OnProfileChanged = <function> defined @Interface\AddOns\GatherMate2\GatherMate2.lua:184
 SetDefaultModulePrototype = <function> defined @Interface\AddOns\BCT\Libs\AceAddon-3.0\AceAddon-3.0.lua:409
 AddNodeChecked = <function> defined @Interface\AddOns\GatherMate2\GatherMate2.lua:247
 DecodeLoc = <function> defined @Interface\AddOns\GatherMate2\GatherMate2.lua:523
 AddNode = <function> defined @Interface\AddOns\GatherMate2\GatherMate2.lua:231
 name = "GatherMate2"
 EncodeLoc = <function> defined @Interface\AddOns\GatherMate2\GatherMate2.lua:510
 IsEnabled = <function> defined @Interface\AddOns\BCT\Libs\AceAddon-3.0\AceAddon-3.0.lua:451
 orderedModules = <table> {
 }
 DeleteNodeFromZone = <function> defined @Interface\AddOns\GatherMate2\GatherMate2.lua:494
 DisableModule = <function> defined @Interface\AddOns\BCT\Libs\AceAddon-3.0\AceAddon-3.0.lua:350
 SweepDatabase = <function> defined @Interface\AddOns\GatherMate2\GatherMate2.lua:451
 SendMessage = <function> defined @Interface\AddOns\Atlas\Libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:59
 RemoveNode = <function> defined @Interface\AddOns\GatherMate2\GatherMate2.lua:395
 GetNameForNode = <function> defined @Interface\AddOns\GatherMate2\GatherMate2.lua:389
 RegisterMessage = <function> defined @Interface\AddOns\Atlas\Libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:90
 GetArgs = <function> defined @Interface\AddOns\Atlas\Libs\AceConsole-3.0\AceConsole-3.0.lua:144
 Print = <function> defined @Interface\AddOns\Atlas\Libs\AceConsole-3.0\AceConsole-3.0.lua:54
 GetNodesForZone = <function> defined @Interface\AddOns\GatherMate2\GatherMate2.lua:367
 FindNearbyNode = <function> defined @Interface\AddOns\GatherMate2\GatherMate2.lua:337
 RemoveGarrisonNodes = <function> defined @Interface\AddOns\GatherMate2\GatherMate2.lua:132
 CreateReversedTable = <function> defined @Interface\AddOns\GatherMate2\GatherMate2.lua:192
 IsModule = <function> defined @Interface\AddOns\BCT\Libs\AceAddon-3.0\AceAddon-3.0.lua:468
 MigrateData80 = <function> defined @Interface\AddOns\GatherMate2\GatherMate2.lua:152
 SetDefaultModuleState = <function> defined @Interface\AddOns\BCT\Libs\AceAddon-3.0\AceAddon-3.0.lua:387
 RegisterDBType = <function> defined @Interface\AddOns\GatherMate2\GatherMate2.lua:179
 HBD = <table> {
 }
 SetEnabledState = <function> defined @Interface\AddOns\BCT\Libs\AceAddon-3.0\AceAddon-3.0.lua:424
 RemoveDepracatedNodes = <function> defined @Interface\AddOns\GatherMate2\GatherMate2.lua:139
 enabledState = true
 InjectNode2 = <function> defined @Interface\AddOns\GatherMate2\GatherMate2.lua:283
 RegisterEvent = <function> defined @Interface\AddOns\Atlas\Libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:90
 UnregisterAl
AddOns:
  Swatter, v8.2.6511 (SwimmingSeadragon)
  Atlas, vv1.47.03.11304.00
  AtlasClassicWoW, vv1.47.02.11304.00
  AtlasLootClassic, vv1.5.6
  AtlasLootClassicData, vv1.5.6
  AtlasLootClassicDungeonsAndRaids, vv1.5.6
  AucAdvanced, v8.2.6471 (SwimmingSeadragon)
  AucFilterBasic, v8.2.6497 (SwimmingSeadragon)
  AucStatHistogram, v8.2.6499 (SwimmingSeadragon)
  AucStatiLevel, v8.2.6503 (SwimmingSeadragon)
  AucStatPurchased, v8.2.6500 (SwimmingSeadragon)
  AucStatSimple, v8.2.6501 (SwimmingSeadragon)
  AucStatStdDev, v8.2.6502 (SwimmingSeadragon)
  AucUtilFixAH, v8.2.6504 (SwimmingSeadragon)
  BCT, v1.37
  BeanCounter, v8.2.6505 (SwimmingSeadragon)
  CharacterStatsClassic, v3.6.8
  ClassicGuildBank, v1.3
  ClassicRaiderProfile, v1.1.0
  DBMCore, v1.13.62-11-gbebd7cc
  DBMDefaultSkin, v
  DBMStatusBarTimers, v
  Details, v
  DetailsStreamer, v
  DetailsTinyThreat, v
  Elephant, v1.13.5
  ElvUI, v1.36
  Enchantrix, v8.2.6506 (SwimmingSeadragon)
  EnchantrixBarker, v8.2.6507 (SwimmingSeadragon)
  ExtendedCharacterStats, v2.6.3
  GatherMate2, v1.46.5
  SlideBar, v8.2.6509 (SwimmingSeadragon)
  Stubby, v8.2.6510 (SwimmingSeadragon)
  BlizRuntimeLib_enUS v1.13.6.11306 <none>
  (ck=49c)

Appreciate any help you can provide.