When I install this mod, the mod "Wings", and the library "LLibrary"(Required for mod Wings) together, the game crashed while initializing.
When I only install LLibrary and Eleccore, the game does not crash.
There seems to be a bug existing in this mod.
(It seems that the conflict happens when the mod Eleccore is trying to register to FML)
The mod Wings is at this link: https://github.com/pau101/Wings

The attachments are the crash report and the latest log.
crash-2018-09-14_05.28.49-client.txt
latest.log