Hello, I'm trying to spawn a Potion EntityItem with 

EntityItem potion1 = new EntityItem(worldIn, pos.getX(), pos.getY(), pos.getZ(),
						new PotionUtils().addPotionToItemStack(new ItemStack(Items.POTIONITEM), PotionTypes.WATER));
worldIn.spawnEntity(potion1);

But every time I perform the action that should drop me the potion I get this error:

[16:16:52] [Server thread/FATAL] [net.minecraft.server.MinecraftServer]: Error executing task
java.util.concurrent.ExecutionException: java.lang.NoSuchMethodError: net.minecraft.potion.PotionUtils: method <init>()V not found
	at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_222]
	at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_222]
	at net.minecraft.util.Util.func_181617_a(SourceFile:47) [h.class:?]
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:723) [MinecraftServer.class:?]
	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:397) [nz.class:?]
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:668) [MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:526) [MinecraftServer.class:?]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_222]
Caused by: java.lang.NoSuchMethodError: net.minecraft.potion.PotionUtils: method <init>()V not found
	at com.environment.randomdrops.events.RandomDrops.Drops(RandomDrops.java:512) ~[RandomDrops.class:?]
	at net.minecraft.block.Block.removedByPlayer(Block.java:1178) ~[aow.class:?]
	at net.minecraft.server.management.PlayerInteractionManager.removeBlock(PlayerInteractionManager.java:271) ~[or.class:?]
	at net.minecraft.server.management.PlayerInteractionManager.func_180237_b(PlayerInteractionManager.java:324) ~[or.class:?]
	at net.minecraft.server.management.PlayerInteractionManager.func_180785_a(PlayerInteractionManager.java:244) ~[or.class:?]
	at net.minecraft.network.NetHandlerPlayServer.func_147345_a(NetHandlerPlayServer.java:704) ~[pa.class:?]
	at net.minecraft.network.play.client.CPacketPlayerDigging.func_148833_a(SourceFile:40) ~[lp.class:?]
	at net.minecraft.network.play.client.CPacketPlayerDigging.func_148833_a(SourceFile:10) ~[lp.class:?]
	at net.minecraft.network.PacketThreadUtil$1.run(SourceFile:13) ~[hv$1.class:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_222]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_222]
	at net.minecraft.util.Util.func_181617_a(SourceFile:46) ~[h.class:?]
	... 5 more

 

The 

if (!entity.world.isRemote)

exists already

37 minutes ago, diesieben07 said:

PotionUtils.addPotionToItemStack is a static method (in fact all methods in PotionUtils are static). Why are you calling it as if it were an instance method? Your IDE should warn you about this, too.

I need it to add some potion effects to a potion itemstack for a little block that drops few items when broken for a minigame I'm creating.

if this is wrong how can I add it?

1 hour ago, diesieben07 said:

Did you read what I said? Do you know basic Java (difference between static and instance methods)?

Oh sorry, I had the suppress warning and I didn't notice it