[Stacked villager discounts not working and "fix-curing-zombie-villager-discount-exploit" is not there]

The server is Paper 1.19.4, and the solution I've seen from other forum posts is to change the setting in the "paper-world-defaults.yml" file (which I think is the right place because that is what section it says here: https://docs.papermc.io/paper/reference/world-configuration#fix-curing-zombie-villager-discount-exploit). I also checked the other folder "paper-global" and it did not seem to be there either. If anybody can help me out, it would be greatly appreciated.

[Why is the lobby broken]

The lobby spawns me in the water lol. Also it gave me multiple error messages before letting me into my server