Hi!

Error while running event combinator-codify::on_gui_click (ID 1)
combinator-codify/control.lua:143: bad argument #1 of 2 to 'newindex' (string expected, got nil)
stack traceback:
[C]: in function '__newindex'
__combinator-codify/control.lua:143: in function <combinator-codify/control.lua:130>

What were you doing when this happened? And what version were you running? Can you reproduce this on the current version?

No problem! :)
- Downloaded this mod: https://mods.factorio.com/mod/pushbutton
- Created a button and placed it on the ground
- Opened the button interface and pressed the "refresh" button (on the right in the code combinator window)
And voila! Error!

https://drive.google.com/file/d/1Kq9hVKmUpLvPigXGsCg_Z0mCKm5ODkNE/view?usp=sharing