Lua error in Wintergrasp BG when opening the map the first time

Message: Interface\AddOns\EnhancedFlightMap\nodeinfo.lua:14: attempt to concatenate local 'myContinent' (a nil value)
Time: Mon Nov  7 14:03:23 2022
Count: 1
Stack: Interface\AddOns\EnhancedFlightMap\nodeinfo.lua:14: attempt to concatenate local 'myContinent' (a nil value)
[string "=[C]"]: in function `OnMapChanged'
[string "@Interface_TBC\AddOns\Blizzard_WorldMap\Blizzard_WorldMap.lua"]:121: in function <...e_TBC\AddOns\Blizzard_WorldMap\Blizzard_WorldMap.lua:120>
[string "=[C]"]: in function `OnMapChanged'
[string "@Interface\AddOns\Blizzard_MapCanvas\Blizzard_MapCanvas.lua"]:39: in function `SetMapID'
[string "@Interface_TBC\AddOns\Blizzard_WorldMap\Blizzard_WorldMap.lua"]:144: in function <...e_TBC\AddOns\Blizzard_WorldMap\Blizzard_WorldMap.lua:142>
[string "=[C]"]: ?
[string "=[C]"]: ?
[string "=[C]"]: in function `Show'
[string "@Interface_Wrath\FrameXML\UIParent.lua"]:2214: in function `SetUIPanel'
[string "@Interface_Wrath\FrameXML\UIParent.lua"]:2059: in function `ShowUIPanel'
[string "@Interface_Wrath\FrameXML\UIParent.lua"]:1927: in function <Interface_Wrath\FrameXML\UIParent.lua:1923>
[string "=[C]"]: in function `SetAttribute'
[string "@Interface_Wrath\FrameXML\UIParent.lua"]:2733: in function `ShowUIPanel'
[string "@Interface_TBC\AddOns\Blizzard_WorldMap\Blizzard_WorldMap.lua"]:8: in function `HandleUserActionToggleSelf'
[string "@Interface_TBC\AddOns\Blizzard_WorldMap\Blizzard_WorldMap.lua"]:182: in function `ToggleWorldMap'
[string "TOGGLEWORLDMAP"]:1: in function <[string "TOGGLEWORLDMAP"]:1>

Locals: (*temporary) = <function> defined =[C]:-1
 = <function> defined @Interface\AddOns\Blizzard_MapCanvas\Blizzard_MapCanvas.lua:529
 = <function> defined @Interface\AddOns\EnhancedFlightMap\map.lua:38

Start with Interface\AddOns\EnhancedFlightMap\nodeinfo.lua at line 14 and trace the first map-change path through map.lua:38. Reproduce by opening the map for the first time in Wintergrasp, then verify that the Lua error no longer occurs.