Describe the bug
When hovering a node collected from older version of the addon, LUA error is produced and it doesn't display what player collected it. The error seems to appear on every single node collected from around version 1.1.5. Do note that it doesn't appear on herbs collected on version 1.1.7.

The following error will appear:

Message: Interface\AddOns\GatherLite\methods.lua:497: attempt to index field 'player' (a nil value)
Time: Fri Sep 6 13:39:32 2019
Count: 143
Stack: Interface\AddOns\GatherLite\methods.lua:497: attempt to index field 'player' (a nil value)
Interface\AddOns\GatherLite\methods.lua:497: in function <Interface\AddOns\GatherLite\methods.lua:484>

Locals: (*temporary) = nil
(*temporary) =

{
[Fadeleaf] = {
}
}
(*temporary) = "[Fadeleaf]"
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = GatherLiteTooltip {
TopOverlay = {
}
updateTooltip = 0.200000
needsReset = true
BottomOverlay = {
}
comparing = false
0 =
}
(*temporary) = "[Fadeleaf]"
(*temporary) = "x2"
(*temporary) =
(*temporary) = "22"
(*temporary) = ":"
(*temporary) = "36"
(*temporary) = ":"
(*temporary) = "12"
(*temporary) = ""
(*temporary) = 12
(*temporary) = "attempt to index field 'player' (a nil value)"
_GatherLite = {
spellIDs = {
}
frames = {
}
classColours = {
}
UpdateInterval = 1
defaultConfigs = {
}
showingTooltip = true
version = "1.2.0"
minimapFrame = {
}
minimap = GatherLite_MinimapButton {
}
tooltip = GatherLiteTooltip {
}
updateMiniMapPosition = defined @interface\AddOns\GatherLite\GatherLite.lua:46
mainFrame = {
}
tracker = {
}
showTooltip = defined @interface\AddOns\GatherLite\GatherLite.lua:26
gatherSpellRanges = {
}
name = "GatherLite"
nodes = {
}
isClassic = true
hideTooltip = defined @interface\AddOns\GatherLite\GatherLite.lua:40
TimeSinceLastUpdate = 0.542000
}
f = herbalismworldmap248 {
0 =
texture = {
}
}
node = {
GUID = "Player-4476-014C6A53"
type = "herbalism"
date = {
}
name = "Fadeleaf"
position = {
}
target = "fadeleaf"
loot = {
}
icon = 134193
spellID = 2366
}
lootTable = true

To Reproduce
Steps to reproduce the behavior:

1. Go to map
2. Hover over an old collected node.
3. See error

Screenshots