The mod Foundations (2.12.1) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event Foundations::on_configuration_changed
Foundations/utilities.lua:288: bad argument #1 of 2 to 'ipairs' (table expected, got nil)
stack traceback:
[C]: in function 'ipairs'
Foundations/utilities.lua:288: in function 'get_placeable_items'
Foundations/utilities.lua:303: in function 'load_tile_lists'
Foundations/utilities.lua:321: in function 'load_global_data'
Foundations/control.lua:611: in function <Foundations/control.lua:609>

I uploaded version 2.12.2, I added a check that should prevent the crash.
However, I have been unable to reproduce this issue.

Do you have more information?
Is this when starting a new or existing save?
What other mods are loaded?

I load existing game, and it uses about 300+ mods :)
Maybe I can send You a savegame?

A save would be very helpful. Does the new version avoid the crash?

The crash occurred in the section of code where it is examining tiles. Maybe you have a mod with a special/modded tiles?

Dectorio? i.e?

Just loaded successfully, thanks!

I just uploaded version 2.12.4 which should resolve the root cause of this error.

Ok, I'll see, thanks :))

Now it works!

Thank you for reporting the issue, very much appreciated.