mod bug

Hello Community of Aternos!

I have a problem with a mod on my server, in this case the "Guard Villagers" mod, when my friend enters the server "he says he falls into the void" and when I enter the game runs correctly, what I don't understand is why it happens that to him, (when entering the ForgeOptifine 1.19 does not throw errors in the main menu) what does appear is an "X" that the mods are not compatible with the server that it asks for but it does let me enter and place the mods in the world.

Any solution? (cracked game)-(My friend owns Linux as Op system)

Quote from Julian

¿Tienen el mismo problema en un servidor Vanilla alojado en Aternos?

Not in vanilla it is correct "I think" since at the moment in which he plays with data from the cell phone connected to the netbook it lets him play but with his wifi not and that the wifi is going well in a vanilla I don't know if it is for now that problem of Wi-Fi since I don't know what your Wi-Fi is like but we have the same company and speed capacity of Mbs