Just now, Eiachh said:

@SubscribeEvent
	public void reeewdyeven(LivingDeathEvent event){
		if (event.getEntityLiving() instanceof  EntityPlayer || event.getEntityLiving() instanceof  EntityPlayerMP){
			System.out.println("asd");
			Minecraft mc = Minecraft.getMinecraft();
			mc.player.sendChatMessage("asdasd");

		}
	}

This event is clientsided as well tho idk what you were talking about

So now you dont have to look for the log files

So what do i need to do

 

Also there is no such thing as "only client side"  if you use forge

https://mcforge.readthedocs.io/en/latest/concepts/sides/

"It is important to understand that FML picks the proxy to instantiate based on the physical side. A single player world (logical server + logical client within a physical client) will still have a proxy of the type you specify in clientSide!"

Even if you are in singleplayer technically you have a "server"

Yea but what do i have to do ??

 

15 minutes ago, Scorpyon04 said:

Yea but what do i have to do ??

 

Step through your code with the debugger, see if it gets called

Just saw that this is for 1.8.9
Sorry we don't support 1.8.9 (it's 3+ years old!) or any version under 1.10 on this forum anymore due to their age. We simply don't know how to help you anymore (as you can see). You can go to the Minecraft Forum where I think that they still still support older versions, or update to a modern version of Minecraft (the latest version or the one before it) to receive support on this forum.

1 minute ago, Cadiboo said:

Step through your code with the debugger, see if it gets called

What debugger

 

The debugger in your IDE.
http://www.vogella.com/tutorials/EclipseDebugging/article.html

https://www.jetbrains.com/help/idea/debugging-your-first-java-application.html