39.487 Loading mod Cursed-Exp 0.7.4 (data.lua)
43.000 Error ModManager.cpp:1577: Failed to load mod "Cursed-Exp": Cursed-Exp/prototypes/entities/cursed-generator.lua:24: attempt to index field 'layers' (a nil value)
stack traceback:
Cursed-Exp/prototypes/entities/cursed-generator.lua:24: in main chunk
[C]: in function 'require'
Cursed-Exp/data.lua:97: in main chunk
43.017 Loading mod core 0.0.0 (data.lua)
43.525 Checksum for core: 114548386
43.729 Error ModManager.cpp:1577: Error in assignID: recipe-category with name 'crafting' does not exist.

It happened during my some tests...