Exception caught during firing event net.minecraftforge.event.ServerChatEvent@9ee356c: java.lang.NullPointerException: null

[DesolateIntention]

Brief explanation of issue:
I don't know why this one happens. It's just weird, though it doesn't crash the server.
No messages were sent in the Discord server while DiscordChat was reconnecting.
Steps to reproduce:
Unknown.

Link to crash report/log in a gist:
Log extract: https://gist.github.com/DesolateIntention/6b3fe130395c60b1cd8dc86710f75593
latest.log

DiscordChat version: 2.3.0.
Minecraft version: 1.12.2.