AFK message problem

I loged on for the first time on the server but it said that I am afk and that I need to move to return to the lobby but I don’t have a lobby and nothing happened when I moved so I couldn’t get rid of the afk message. I hope there’s a fix for this.

I made this server to play with friends, so I didn’t download any mods or plugins.

my username is the same as this one : Cheesy_Nuget707

I know that the afk timeout is for other players to take the place of players that aren’t playing but in my case, I wasn’t even afk to begin with and the afk message was stuck on my screen.

The bug is now gone, thank you anyway.