Custom Modpack Crash

[csabi03]

Hey I could use some help please.

 

I made a custom modpack and it loads into the game. But when I made a new map it instantly crashed with Fatal error, disconected from server even though I created a singleplayer world.

 

Here are some important files like latest log, and fml-lient-latest log and a modlist:

latest log:

https://pastebin.com/82vPdtnN

fml latest client log:

https://www.dropbox.com/s/r3chvw7ach0tlv5/fml-client-latest.log?dl=0

modlist:

https://imgur.com/bDHYwLP

 

Thanks for your help in advance!