I can't connect on my server

I can't connect on my server, this appears. ( It's a Magma server )

When I click yes it puts me on the minecraft menu. It's the same thing if I click no

It starts happening yesterday when I change my Forge server to Magma

I removed a mod and added some plugins. The server says me that it had an error with a plugin. I removed this plugin but the problem is still here

No I don't have it

ok I'll test that

I removed all mods and all plugins and the same message appears

I don't know where find my client logs but that's the server logs : https://mclo.gs/Ldty921

[14:24:27] [main/INFO]: Setting user: Play_Max_Group

[14:24:37] [main/INFO]: LWJGL Version: 2.9.2

[14:24:48] [main/INFO]: Reloading ResourceManager: Default, FMLFileResourcePack:Forge Mod Loader, FMLFileResourcePack:Minecraft Forge, FMLFileResourcePack:mercurius_updater, FMLFileResourcePack:CustomNPCs, FMLFileResourcePack:ToroQuest

[14:24:57] [Sound Library Loader/INFO]: Starting up SoundSystem...

[14:24:57] [Thread-6/INFO]: Initializing LWJGL OpenAL

[14:24:57] [Thread-6/INFO]: (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)

[14:24:57] [Thread-6/INFO]: OpenAL initialized.

[14:24:58] [Sound Library Loader/INFO]: Sound engine started

[14:25:12] [main/INFO]: Created: 512x512 textures-atlas

[14:25:57] [main/WARN]: Unable to start LAN server detection: Can't assign requested address

[14:26:13] [main/INFO]: Connecting to rubidium.aternos.host., 10764

[14:26:24] [main/WARN]: Unable to start LAN server detection: Can't assign requested address

[14:26:24] [Netty Client IO #7/ERROR]: Invalid server icon (unknown format)

[14:26:24] [main/ERROR]: Can't ping EarthMC.net: Disconnected

[14:26:48] [main/WARN]: Unable to start LAN server detection: Can't assign requested address

[14:26:49] [main/ERROR]: Can't ping EarthMC.net: Disconnected

[14:26:49] [Netty Client IO #2/ERROR]: Invalid server icon (unknown format)

[14:26:54] [main/INFO]: Connecting to RevengeLegion.aternos.me, 25565

[14:29:26] [main/WARN]: Unable to start LAN server detection: Can't assign requested address

[14:29:26] [Netty Client IO #5/ERROR]: Invalid server icon (unknown format)

[14:31:17] [main/INFO]: Connecting to calcium.aternos.host., 10726

[14:32:16] [main/INFO]: Stopping!

[14:32:16] [main/INFO]: SoundSystem shutting down...

[14:32:17] [main/WARN]: Author: Paul Lamb, http://www.paulscode.com