Only full ingredient list is allowed now, it should be changed to ingredients = { {type = "item", name = params.ore, amount = 50} }
It now causes crashes, see:
https://mods.factorio.com/mod/bzlead/discussion/68d28a4bf15bb5d28ab8935b
https://mods.factorio.com/mod/K2QualityCompat/discussion/68eb2a560f6db45c5d2647bd