Updated today. First of all Krastorio lost compability with Power Armor Mk3. Disabled it. now this:

17.872 Mods to disable:Failed to load mods: Krastorio/data-updates.lua:135: ...rio__/prototypes/vanilla-changes/vanilla-changes-all.lua:2652: attempt to index field 'normal' (a nil value)
stack traceback:
...rio__/prototypes/vanilla-changes/vanilla-changes-all.lua:2652: in main chunk
[C]: in function 'require'
Krastorio/data-updates.lua:135: in main chunk
stack traceback:
[C]: in function 'require'
Krastorio/data-updates.lua:135: in main chunk

Mods to be disabled:
• Krastorio

Could u send me the list of mods that u use? Anyway if u disable the rebalance of circuits don't crash

found culprit - mod More Circuits.
https://mods.factorio.com/mod/MoreCircuits
I guess you installed this option "rebalance circuits" recently? That mode has old recipies and they conflict obviously.

Rebalance circuits is very old option, but i know how fix it, i will do it later. Check for mod update maybe tonight or tomorrow

I believe in the mod settings you can disable a rebalance and it will fix it.

I told it too, but for temporany fix, anyway will be resolved, don't worry

I want the rebalance:) That's the problem.

Let me know if 1.2.2 fix the problem

Didn't fix it:
17.035 Factorio initialised
17.039 Mods to disable:Failed to load mods: Krastorio/data-updates.lua:135: aswil/aswil_lib/recipes.lua:1080: attempt to index field 'normal' (a nil value)
stack traceback:
aswil/aswil_lib/recipes.lua:1080: in function 'setRecipeEnergyCost'
...rio__/prototypes/vanilla-changes/vanilla-changes-all.lua:2675: in main chunk
[C]: in function 'require'
Krastorio/data-updates.lua:135: in main chunk
stack traceback:
[C]: in function 'require'
Krastorio/data-updates.lua:135: in main chunk

Mods to be disabled:
• Krastori

I will work on it in the next days

I don't think it can be fixed in Krastorio.

Report it to the mod author