[java] unionlib version doesnt match

so recently my friend made a modded server on aternos, everything was working fine, i logged off, go to sleep and next day when i tried to join the server this message showed up (it works for my friend), whats weird that i have the same version of the mod as the server has, which u can see on the screenshot. Anyone knows how to fix this? version is 1.18.2 https://showbox.bio/

I got this,...