The famous error : io-netty-channel-abstractchannelannotatedconnectexception [Solved]

Hi guys, and also sorry for the trouble,
To begin with this error: io-netty-channel-abstractchannelannotatedconnectexception. Very annoying. I try to restart my pc, delete and install Minecraft, clean the .minecraft, update java (Already in the last version),... And also clean all cache in the invite command panel of Windows. But the thing is, nothing changes.

If I start Minecraft in vanilla 1.16.5 (my server is in the same version), when I go in multiplayer, when the aternos server is off I see it, but when they start, It say: Can't connect to the server. Still want to launch it, I go to play and the error appears.

My server log : https://mclo.gs/LALPdIi

Oh i have didn't test that... I feel so stuuuuuuuuuuupid !
It works with DynIP Thank you very much sir !
And sorry for have lose your time...