My prediction was half right: A Create Fly update made some recipes from nerfad stop to work. But supplying a blaze burner would not help.
Create Fly update build-3 -> all mixing and compacting recipes had to be changed to work again.
Developer information
Projects on Modrinth are automatically available through a Maven repository for use with JVM build tools such as Gradle.
maven { name = "Modrinth"; url = "https://api.modrinth.com/maven" }