When the sidebar is displayed, players will not be able to join the server.

[NamiUni]

I use SideBar to display scores for fishing competitions.
When I display the SideBar, the server kicks me and I cannot join the server.

log

[20:00:07] [Server thread/INFO]: [ProtocolSidebar] Server version: (MC: 1.20.2) (protocol 763)
[20:00:07] [Server thread/INFO]: [ProtocolSidebar] Please report any bugs to the developer: https://github.com/CatCoderr/ProtocolSidebar/issues
[20:00:07] [Server thread/INFO]: 🎣 この大会は10分0秒あるよ！
[20:00:07] [Server thread/INFO]: Kazane_1210 lost connection: Disconnected
[20:00:07] [Server thread/INFO]: namanamayan lost connection: Disconnected
[20:00:07] [Server thread/INFO]: Kafilistan lost connection: Disconnected

code
https://github.com/NamiUni/more-fish/blob/rewrite/src/main/java/com/github/namiuni/morefish/competition/CompetitionSideBar.java