Conflict with Bot Servicing mod (https://mods.factorio.com/mod/Bot_Servicing):
Mods to disable:Failed to load mods: __BurnerAssemblingMachine__/prototypes/recipes-fixes.lua:50: attempt to index field 'normal' (a boolean value)
stack traceback:
__BurnerAssemblingMachine__/prototypes/recipes-fixes.lua:50: in function 'check_ingredients'
__BurnerAssemblingMachine__/prototypes/recipes-fixes.lua:109: in main chunk
[C]: in function 'require'
__BurnerAssemblingMachine__/data-final-fixes.lua:1: in main chunk
Mods to be disabled:
• BurnerAssemblingMachine (0.3.7)
This occurs with only these two mods enabled.
EDIT: Did some digging, and this is because recipe.normal can be set to false (a boolean value) if the recipe is only valid in expensive mode. You'll need to include a check for that.
EDIT2: Simply changing the referenced line in the error message to the below fixes it:
elseif recipe.normal and recipe.normal.ingredients then