Error while running event great_start::on_player_created (ID 25)
great_start/control.lua:11: attempt to index local 'inventory' (a nil value)
stack traceback:
great_start/control.lua:11: in function 'main'
great_start/control.lua:41: in function <great_start/control.lua:40>

Hello, first thank you for trying my mod !

I need for info for debugging :
- When did the error happen ? When loading the map or mid-game ?
- Which game version are you running ?
- Are you running other mods ? If so, please give the full list to see if there are conflicts

Hello! This error appears when starting game without player character (e.g. sandbox mode, something like Nullius mod probably would be affected as well). Just happened for me too on Factorio 1.1.57 with Great start 1.1, and here is my full mods list (some are disabled) if that matters:

❯ jq -r ".mods[].name" .factorio/mods/mod-list.json
base
alien-biomes
alien-biomes-hr-terrain
artillery-bombardment-remote-reloaded
AutoDeconstruct
automatic-station-painter-continued
Automatic_Train_Painter
belt-reverserup
betterartillerysounds
BetterTemporaryTrainStops
BottleneckLite
CleanFloor
CursorEnhancements
DiscoScience
Enhanced_Map_Colors
even-distribution
factoryplanner
FactorySearch
far-reach
Fill4Me
flib
FluidWagonColorMask
great_start
GUI_Unifyer
Gun_Turret_Alerts
HallOfFame
Honk
inbuilt_lighting
IndustrialRevolution
Infinizoom
inventory-repair
LandfillEverything
MaxRateCalculator
OreDestroyBombs
PickerAtheneum
PickerBeltTools
PickerDollies
PipeVisualizer
RecipeBook
resourceMarker
reverse-factory
sonaxaton-research-queue
Squeak Through
stdlib
Tapeline
TaskList
UI_Hotkeys
VehicleSnap
WhereIsMyBody