I downloaded that before, and it told me to download forge 41.0.64,
i tried searching for it in aternos and it wasnt there so i downloaded it manually from the link it gave me, (minecraft forge)
and when i did that, it told me to download forge ver 41 so im pretty bummed idk what to do
Forge server log [#xQgTF6q] - mclo.gs
update: i removed the mod and added other mod that works in forge 41 but i still couldnt enter the server although it was online.