And the problem was I had a couple ingredients left with no specified but just a bare number.

All fixed now.

So I am updating my mod for 2.0 and while it shows no errors for my module itself I get this error message when trying to enable it:

Failed to load mods: __quality__/prototypes/recycling.lua:112: attempt to perform arithmetic on local 'final_amount' (a nil value)
stack traceback:
__quality ...