Error while running event Workbench::on_robot_built_entity (ID 14)
__Workbench__/control.lua:10: bad argument #3 of 3 to '__index' (string expected, got nil)
https://i.imgur.com/2hesaNq.jpeg code at right at the end

I'm mot interacting with my mod at that point, any ghost does it as soon as a bot ...

I was happy as i could be, u know, playing factorio and all....then u make a train, a FARL module, and bammm, error all over the screen(printed, not crash)
can anyone tell me what i need to do to fix it? any idea, direction at all would be massive help already!


FARL CODE BELOW
if farl:update ...

HI, i'm new to mod,but still i started with the workbench mod, however workbench mk4 is bugged....i get in(as u do with any car)
but i can't get out, something to do with the size of it or something i didn't figure yet...

i did manage to fix for mk3, mk2 and even mk1, been the smallest one, easy ...

I'm making a mod, the way i'm building it, it uses a vehicle type of entity, however, i don't want to actually put itens on it so it stop flashing....when i place it, script does that for me...no one needs to know it's a car type of thing....pssss

so when i pick it up i'm trying to delete that ...