IEventBus modEventBus = FMLJavaModLoadingContext.get().getModEventBus();

It says that '.get()' is deprecated since version 1.21.1 and has been marked for removal.

How should I replace this line or section of code so it works?

Or is there a way to fix it?

Full Block of Code:

IEventBus modEventBus = FMLJavaModLoadingContext.get().getModEventBus();    // This is the line that's messed up... I don't know why

modEventBus.addListener(this::commonSetup);

MinecraftForge.EVENT_BUS.register(this);

Quote

/**

* Helper to get the right instance from the {@link ModLoadingContext} correctly.

* @return The FMLJavaMod language specific extension from the ModLoadingContext

*

* @deprecated use {@link FMLJavaModLoadingContext} in your mod constructor

*/

 

 

public ExampleMod(FMLJavaModLoadingContext context) {
    var modEventBus = context.getModEventBus();
}

Refer to the javadocs and MDK for more pointers and examples.