OcelotJungle

In Spigot I can change a biome with one line of code (just block.setBiome()), but there I can't find any way to do it. Can anyone help?

Solved by reloading my PC. But, maybe, this topic may help any dumb guy like me, so you can close it.

Minecraft version 1.15.2, forge version 31.1.35, I just try to compile example mod (from forge mdk zip). Checked: there are no these files in /bundeled_repo/, but they are in /minecraft_user_repo/, anyway if I copy them to the right folder it still doesn't work. Tried to google it, but with no success, really don't know what's wrong with it (and with me). My first try to make mod and I failed at start, so shamefully.