Plugin Triton tried to register listener for unknown packet

[sprytex]

Describe the bug

[04:00:09 WARN]: [ProtocolLib] Error filtering reports: java.lang.IllegalArgumentException: Cannot find report name for Plugin %s tried to register listener for unknown packet %s [direction: from %s]
[04:00:09 WARN]: [ProtocolLib] [OutboundPacketListenerSet] Plugin Triton tried to register listener for unknown packet OPEN_BOOK[PLAY, SERVER, 50, classNames: [net.minecraft.server.v1_12_R1.PacketPlayOutOpenBook, net.minecraft.network.protocol.game.ClientboundOpenBookPacket, PacketPlayOutOpenBook, ClientboundOpenBookPacket, OpenBook] (unregistered)] [direction: from SERVER]

How can the bug be reproduced?

No response

Expected behaviour

No response

Which Spigot fork are you using?

Vanilla Spigot (from BuildTools)

What's your server version?

ver [04:00:57 INFO]: This server is running Dionysus version git-Dionysus-"25c8195" (MC: 1.12.2) (Implementing API version 1.12.2-R0.1-SNAPSHOT) [04:00:57 INFO]: Checking version, please wait... [04:00:57 INFO]: Unknown version, custom build?

Which proxy are you using?

I'm not using a proxy

What's your proxy version?

No response

What's the MC version of your client?

1.12.2

What's the Triton version you're using?

bfde332

Additional Information

No response