Alex, I would like to say that I found out that CoFH Lib, is only available for 1.7, I will see which mods from my list are available in this version, thanks for your answer and sorry for wasting your time tied it, thanks 
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Alex
I just can't install the last mod mentioned, I haven't tested what happens if I turn on the server without it, I'll test it in a few minutes, but do you think it will work? -
Hi, I'm creating a server to play with my friends, and I would like to install the NuclearCraft mod, but for that I need CoFH Core, and to install it I need CoFH Lib, and I can't install it, how could I fix it that?
I hope some answer
CoFH Lib link: https://aternos.org/addons/a/curseforge/cofh-lib