LoopyBunny53

I am playing with my two friends on one of their servers. We are only using the Aether 2 mod. Found here: https://minecraft.curseforge.com/projects/the-aether-ii . We are using an updated form of Forge. (I got my version yesterday). The moment me and my one friend try to get in the server we get this: I only have to click okay and I can get in. But it is still an issue for my friend. I saw this issue around the forums and I never found an actual answer. So please help. The logs should be attached. 2019-05-19-7.log.gz 2019-05-20-1.log.gz