A-Game

Your still not even registering your structure correctly, you have your deferred register commented out...

Looking at your code, your structure piece does not add anything, and the chunks for your structure to spawn in is set to null. I suggest looking at vanilla structures as reference. As for your registries, the structures aren't registered in a valid way, I'd recommend looking at either event registries, deferred register, or object holder registries as a way to register your objects.

I have found that others are experiencing this issue, not just you. What forge version are you using?

What version of the game and Forge?

Is this from using the installer?

https://github.com/TheElectronWill/night-config/blob/master/core/src/main/java/com/electronwill/nightconfig/core/io/ParsingException.java You copied code from this link, and it had an "invalid character f" in that class

Do you have a custom config for your mod? (What Daemon said)

Perhaps check your config class?

https://gist.github.com/TheAGamePlayer/a621bfd50610325c42b6dc65c205040d Even if I fix the carver, I still get this error (Removing setSeed methods from custom Surface Builders have no effect)

https://gist.github.com/TheAGamePlayer/7eba140d3eb131c146d32067bac4e267 The Correct Registry Format https://gist.github.com/TheAGamePlayer/c6705673efb13a9f8a8e565b32c0f068 The Carver

https://gist.github.com/TheAGamePlayer/92d7cb6c3e8a968f0b8f0b0d1980eb30 Heres the Log

For the Screen, have you tried to put in your constructor "this.width = super.width * 2" & "this.height = super.height * 2" to double the size instead of setSize method?

https://gist.github.com/TheAGamePlayer/a45043863beb5cfcc7cdeb249cdb6dcf I was wondering if it would be possible to use Deferred Register without RegistryObjects (such as the example above) without it having any potential issues. The reason I wanted to avoid using RegistryObjects was to prevent crashes such as putting them in a list of carvable fluids for a carver and getting nullPointerException errors. Is this possible? Or should I go back to using Registry Objects?

And It was a simple oversight

My GitHub link: (sorry if my code is kinda messy, I'm just trying to get rid of all my bugs before I clean it up) https://github.com/TheAGamePlayer/The-Visionary-Mod/tree/VisionaryMod(1.14.4) My ocean biomes spawn in as intended, though where the land biomes would normally spawn, plains biomes appear instead. Perhaps this is a slight oversight on my part, though I've had no success so far.