bug [Solved] Strange error whenever I create a new world/enter a world in 1.12

[NovaViper]

I've noticed a bug every so often I try to create a new world or enter a world. The game would finish creating it, but then when it gets to sending me to the world, it spits out this long error and it displays '0%' on the screen. I'm using Forge 14.21.1.2413 with several mods that I'm using to create a modpack. Here's my FML Log

Edited July 25, 2017 by NovaViper
Added link for FML log

[NovaViper]

I thought it was Optifine but it still keeps on crashing.. And It doesn't even tell me what mods are causing the crash. Anyone have any idea why?

[NovaViper]

53 minutes ago, diesieben07 said:

Remove these for a start:

 

That didn't work.. that crash still occurs

[samuelvelter2]

the log doesn't specify a world loading error, because the log is too big for pastebin post in another site(like gist) and post the link here. if it's a "netty.io" problem, i'm having that too

[NovaViper]

Look at the error I posted, the error doesn't show in the actual log because that's were the game freezes completely. I had to close the game in order to get out of the freeze

[Cloudy]

Can you try a later Forge version (i.e. the latest)? There was a recent fix done to try and prevent this very issue.

[NovaViper]

10 minutes ago, Cloudy said:

Can you try a later Forge version (i.e. the latest)? There was a recent fix done to try and prevent this very issue.

I saw that they fixed it, I made a little issue on the Github repo and got the word that they fixed it as soon as they closed the issue. Thanks