What behaviour is observed:

I issued command /setskin nick and error is generated. I think it is connected with changes related to "Minecraft 1.13.1 No field with type int PacketPlayOutRespawn #153"

What behaviour is expected:

Change my skin

Steps/models to reproduce:

I issued /setskin command and in server log exception is generated. My client gets disconnected from server.

Plugin list:

Plugins (9): Vault (v1.6.7-b80), Essentials (v2.15.0.45), EssentialsSpawn (v2.15.0.45), LoginSecurity (v2.0.29-a5f398f), GriefPrevention (v16.9.alpha), EssentialsChat (v2.15.0.45), zPermissions (1.4.2-SNAPSHOT build: 094f006), ProtocolLib (v4.4.0-SNAPSHOT-b415), ChangeSkin (v3.1-SNAPSHOT-f5f3276)

Environment description

Spigot git-Spigot-2440e18-6304ccd (MC: 1.13.1), Debian 9, Oracle Java 1.8.0_181, MariaDB 10.3.9

Plugin version or build number:

ChangeSkin v3.1-SNAPSHOT-f5f3276

Error Log:

[16:32:23] [Server thread/INFO]: ieti issued server command: /setskin Stela
[16:32:23] [Netty Epoll Server IO #3/ERROR]: java.lang.NullPointerException
[16:32:23] [Server thread/INFO]: ieti lost connection: Internal Exception: io.netty.handler.codec.EncoderException: java.lang.RuntimeException: An internal error occured.

Configuration:

Standard configuration using MySQL.