Could not remove the server packet handler

[twseer67875]

Is there an existing question issue for this?

• I have searched the existing question issues and have not found a duplicate relating to my question.

Subject of Question

I don't know why my server will have the following message after the player leaves the game. Although it can be safely ignored, I want to ask what happened to this problem? Can I adjust it and solve it myself?

Question

[18:26:38 WARN]: [NoEncryption] Could not remove the server packet handler for TW_seer67875 (900c755a-22c6-4f84-8749-1db223ee560f)
[18:26:38 WARN]: [NoEncryption] This is not a fatal error, will be cleaned in garbage collection, and can be safely ignored

Server Version:

[18:35:04 INFO]: This server is running Paper version git-Paper-404 (MC: 1.19.3) (Implementing API version 1.19.3-R0.1-SNAPSHOT) (Git: f9dc371)
You are 44 version(s) behind
Download the new version at: https://papermc.io/downloads
Previous version: git-Paper-307 (MC: 1.19.2)

[koval01]

As a workaround, you can use AntiPopup. It removes all errors of offline server mode, including chat, and does not generate errors. But keep in mind that for correct operation, you must choose the correct mode in the plugin configuration. If you have an old version (1.19.2 and below), then use PACKET mode, and if the server is updated, then - NMS.