Mr. Pineapple

1.8.9 isn’t supported, update to a sorted version to receive help

1.8.9 isn't supported by forge, update to receive support

Yeah, they were backported to 1.14 too. Though that version is loosing LTS at somepoint soon

There were minimal changes between the versions for most things, still use DeferredRegistries for registering things. Though, the only way to know what has changed is to update yourself and see.

1.12 isn't supported here. You should update for help.

Check curse forge, thats the best place to go

Oh well, I'm glad you found your answer, I didn't just join to comment on your post. I just forgot the password to my old account so made a new one lol

1.12 is no longer supported on this forum

Try looking at this: https://github.com/Mr-Pineapple/Pine-Tutorial/blob/master/src/main/java/com/pineapple/tutorialmod/world/gen/TutorialGeneration.java The commented out part should show you how to use the create method inside of the FillerBlockType