Cant edit anvil via paper API

What behaviour is expected:

What you expected to see
paper api : open the anvil and use it ingame

What behaviour is observed:

What you actually saw
i was kicked from the server when i use it: Packet processing error .
And i saw a error in the console: https://pastebin.pl/view/49f4d75a

Steps/models to reproduce:

This may include a build schematic, a video, or detailed instructions to help reconstruct the issue
open a anvil with the paper api, code: player.openInventory(Bukkit.createInventory(player, InventoryType.ANVIL));
use it and you see you are kicked because Packet procressing error. and in the console is a big error

Plugin list:

A list of your plugins
https://i.imgur.com/f8edd3y.png
-essentials is my plugin!

Paper version:

Paste the output of running /version on your server WITH the Minecraft version. latest is not a version; we require the output of /version so we can properly track down the issue.
https://i.imgur.com/bXFo6ac.png

Start by reproducing the issue with player.openInventory(Bukkit.createInventory(player, InventoryType.ANVIL)) and review the linked console error and Paper version details. Confirm the behavior with the listed plugin setup; done means the anvil can be opened and used through the Paper API without a kick or packet-processing error.