Follow this template except for feature requests. Use pastebin when providing /protocol dump and any relevant errors.

Make sure you've done the following:

• You're using the latest build for your server version
• This isn't an issue caused by another plugin
• You've checked for duplicate issues
• You didn't use /reload

Debug paste link:
https://hastebin.com/oqicayiruw.cs

Description and relevant errors:
If a player was online and a new player join the server, all players are kick. The server was still up and we can join it again, but crash if 2 players are online.

I also have latest paperspigot version: Paper-1.13.2-f238f3a-20190126-0011
Latest Protocolib: Build 425

Thanks again for your help

I need some more information. Run /protocol dump and paste the output using pastebin.