Module errors in Classic

Today I got an error when I logged into my mage alt.

My mage alt is currently sitting in Orgrimmar (got logged out after being AFK).

Message: InterfaceAddOnsDugisGuideViewerZGPSArrow.lua:943: attempt to index local ‘frameToBePlaced’ (a nil value)
Time: Mon Apr 19 19:21:41 2021
Count: 1
Stack: InterfaceAddOnsDugisGuideViewerZGPSArrow.lua:943: attempt to index local ‘frameToBePlaced’ (a nil value)
…OnsTradeSkillMasterLibTSMServiceErrorHandler.lua:758: in function <…OnsTradeSkillMasterLibTSMServiceErrorHandler.lua:717>
[C]: ?
InterfaceAddOnsDugisGuideViewerZGPSArrow.lua:943: in function `PlaceOutisideMap’
InterfaceAddOnsDugisGuideViewerZGPSArrow.lua:993: in function `PlaceButtonsOutideMapIfNeeded’
InterfaceAddOnsDugisGuideViewerZGPSArrow.lua:1015: in function `UpdateMerged’
InterfaceAddOnsDugisGuideViewerZarrow.lua:2071: in function `UPDATE’
InterfaceAddOnsDugisGuideViewerZarrow.lua:2028: in function <InterfaceAddOnsDugisGuideViewerZarrow.lua:1609>

Locals: errMsg = “InterfaceAddOnsDugisGuideViewerZGPSArrow.lua:943: attempt to index local ‘frameToBePlaced’ (a nil value)”
isBugGrabber = nil
tsmErrMsg = nil
oldModule = nil
private = <table> {
 globalNameTranslation = <table> {
 }
 FormatErrorMessageSection = <function> defined @InterfaceAddOnsTradeSkillMasterLibTSMServiceErrorHandler.lua:517
 ErrorHandler = <function> defined @InterfaceAddOnsTradeSkillMasterLibTSMServiceErrorHandler.lua:134
 origErrorHandler = <function> defined @InterfaceSharedXMLSharedBasicControls.lua:295
 hitInternalError = false
 CreateErrorFrame = <function> defined @InterfaceAddOnsTradeSkillMasterLibTSMServiceErrorHandler.lua:536
 num = 0
 SanitizeString = <function> defined @InterfaceAddOnsTradeSkillMasterLibTSMServiceErrorHandler.lua:510
 AddonBlockedHandler = <function> defined @InterfaceAddOnsTradeSkillMasterLibTSMServiceErrorHandler.lua:502
 GetStackLevelInfo = <function> defined @InterfaceAddOnsTradeSkillMasterLibTSMServiceErrorHandler.lua:344
 ParseLocals = <function> defined @InterfaceAddOnsTradeSkillMasterLibTSMServiceErrorHandler.lua:396
 ignoreErrors = false
 errorReports = <table> {
 }
 IsTSMAddon = <function> defined @InterfaceAddOnsTradeSkillMasterLibTSMServiceErrorHandler.lua:478
 localLinesTemp = <table> {
 }
 GetStackInfo = <function> defined @InterfaceAddOnsTradeSkillMasterLibTSMServiceErrorHandler.lua:313
}
MAX_STACK_DEPTH = 50
OLD_TSM_MODULES = <table> {
 1 = “TradeSkillMaster_Accounting”
 2 = “TradeSkillMaster_AuctionDB”
 3 = “TradeSkillMaster_Auctioning”
 4 = “TradeSkillMaster_Crafting”
 5 = “TradeSkillMaster_Destroying”
 6 = “TradeSkillMaster_Mailing”
 7 = “TradeSkillMaster_Shopping”
 8 = “TradeSkillMaster_Vendoring”
 9 = “TradeSkillMaster_Warehousing”
}

Any ideas on this error?