Right clicking mob won't open GUI

 Fair enough, here you go. Thank you!

it's at https://imgur.com/a/MGJvVr1 in case you can't see it

it's when right clicked on entity

package net.mcreator.obamamod.procedures;

import net.minecraftforge.registries.ForgeRegistries;
import net.minecraftforge.fml.network.NetworkHooks;

import net.minecraft.world.World;
import net.minecraft.util.text.StringTextComponent;
import net.minecraft.util.text.ITextComponent;
import net.minecraft.util.math.BlockPos;
import net.minecraft.util.SoundCategory;
import net.minecraft.util.ResourceLocation;
import net.minecraft.network.PacketBuffer;
import net.minecraft.inventory.container.INamedContainerProvider;
import net.minecraft.inventory.container.Container;
import net.minecraft.entity.player.ServerPlayerEntity;
import net.minecraft.entity.player.PlayerInventory;
import net.minecraft.entity.player.PlayerEntity;
import net.minecraft.entity.Entity;

import net.mcreator.obamamod.gui.ObamacareGui;
import net.mcreator.obamamod.ObamaModModElements;

import io.netty.buffer.Unpooled;

@ObamaModModElements.ModElement.Tag
public class ObamaRightClickedOnEntityProcedure extends ObamaModModElements.ModElement {
	public ObamaRightClickedOnEntityProcedure(ObamaModModElements instance) {
		super(instance, 6);
	}

	public static void executeProcedure(java.util.HashMap<String, Object> dependencies) {
		if (dependencies.get("entity") == null) {
			System.err.println("Failed to load dependency entity for procedure ObamaRightClickedOnEntity!");
			return;
		}
		if (dependencies.get("x") == null) {
			System.err.println("Failed to load dependency x for procedure ObamaRightClickedOnEntity!");
			return;
		}
		if (dependencies.get("y") == null) {
			System.err.println("Failed to load dependency y for procedure ObamaRightClickedOnEntity!");
			return;
		}
		if (dependencies.get("z") == null) {
			System.err.println("Failed to load dependency z for procedure ObamaRightClickedOnEntity!");
			return;
		}
		if (dependencies.get("world") == null) {
			System.err.println("Failed to load dependency world for procedure ObamaRightClickedOnEntity!");
			return;
		}
		Entity entity = (Entity) dependencies.get("entity");
		int x = (int) dependencies.get("x");
		int y = (int) dependencies.get("y");
		int z = (int) dependencies.get("z");
		World world = (World) dependencies.get("world");
		{
			Entity _ent = entity;
			if (_ent instanceof ServerPlayerEntity) {
				BlockPos _bpos = new BlockPos((int) x, (int) y, (int) z);
				NetworkHooks.openGui((ServerPlayerEntity) _ent, new INamedContainerProvider() {
					@Override
					public ITextComponent getDisplayName() {
						return new StringTextComponent("Obamacare");
					}

					@Override
					public Container createMenu(int id, PlayerInventory inventory, PlayerEntity player) {
						return new ObamacareGui.GuiContainerMod(id, inventory, new PacketBuffer(Unpooled.buffer()).writeBlockPos(_bpos));
					}
				}, _bpos);
			}
		}
		world.playSound((PlayerEntity) null, x, y, z,
				(net.minecraft.util.SoundEvent) ForgeRegistries.SOUND_EVENTS.getValue(new ResourceLocation("obama_mod:healthcare")),
				SoundCategory.NEUTRAL, (float) 1, (float) 1);
	}
}

I pretty new to this so I'm not sure if this is what you're looking for, but here you go.

It works now! Thanks for your help.

sorry about that, I thought I had already tried that but I guess I just needed to try it again.