Server Crashes When Mods Added

[faFFy]

Trying to make a server for me and a friend and can't for the life of me get the mods to work server side. The mods are from Mythic: Classic and the crash reports don't help me in the slightest, still new to modding.

I can try and supply any information needed if asked since I wasn't sure what else to type or show here, thank you.

Edit: Just added a crash report in case that helps.

crash-2018-04-25_03.32.35-server.txt

Edited April 25, 2018 by faFFy

[JaariAtmc]

UCE    CustomMainMenu{1.9.2} [Custom Main Menu] (CustomMainMenu-MC1.7.10-1.9.2.jar)

Guess what kind of mod this is, and why this kind of mod won't work on a server.