Factorio says this
Error ModManager.cpp:1758: Error while running setup for entity prototype "WideChests_wide-wooden-chest-42" (container): next_upgrade target (WideChests_wide-iron-chest-42) must have the same bounding box.

then asks if i want to disable wide chests and/or squeakthrough2

I have enabled collision lists and added WideChests_wide-wooden-chest-42 and the high version to both lists

wat do fren?

add both iron to the list?

I believe that's happening because you're disabling collision with wooden chests specifically, which makes squeak through not modify the collision box anymore. The game doesn't like that, because upgrading it into an iron chest would change the size of the entity. Try adding both the iron chest 42 and the steel chest 42 to the list, since that will make them all the same size. It's not the best solution, but it's the only solution right now, I'll see if I can make the setting better soon.

Thank you
it also works to only mod the wood chest and not have any upgrades.
I think you have it right.