control.lua:641: attempt to index local 'MROdata' (a nil value)

Hi, did this happen after you changed some settings of this mod? What mods did you use?
I'd like to help, but to do this I need more information about this

Problem solved for me just by starting a new game =/
Is it not enough to just know the problematic line of code? I thought so =/
No, settings didn't change. This error appeared after recent update to Factorio itself (and some mods subsequently) if I remember it correctly. I use Angel+Bob+Clown setup with a couple of QOL mods, if it matters

I just hit an same issue probably related:

The mod Maintenance Madness (0.9.15) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event MaintenanceMadness::on_configuration_changed
MaintenanceMadness/control.lua:659: attempt to index local 'MROdata' (a nil value)
stack traceback:
MaintenanceMadness/control.lua:659: in function 'updateEntityControlEntry'
MaintenanceMadness/control.lua:687: in function 'updateMaintanceControlSettings'
MaintenanceMadness/control.lua:1955: in function <MaintenanceMadness/control.lua:1933>

It happened in a existing directly after adding the mod BitersBegoneUpdated or when loading the save without any of the other mods from the save.

If needed I can provide the savegame. I was not able to reproduce it in a "clean" savegame

Same, after removing AAI Industry mod :

The mod Maintenance Madness (0.9.15) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event MaintenanceMadness::on_configuration_changed
MaintenanceMadness/control.lua:659: attempt to index local 'MROdata' (a nil value)
stack traceback:
MaintenanceMadness/control.lua:659: in function 'updateEntityControlEntry'
MaintenanceMadness/control.lua:687: in function 'updateMaintanceControlSettings'
MaintenanceMadness/control.lua:1955: in function <MaintenanceMadness/control.lua:1933>