Minecraft Version: 1.11.2
Forge Version: 13.20.1.2588
Mod Version: Infinity-0.13.2-MC1.11.2
Crash report

I'm playing a spigot server.
When I press "U" in creative mode, it suddenly crash.
Trying a few times, it crash every time, even in survival mode.

I can't really provide support for the 1.11.2 backport. I recommend using the 1.12.2 version.
I would need the crash report to identify what went wrong.

I see. Thanks for response👍
crash report is here: https://gist.github.com/mikucat0309/0e48d2bd1f1ea7985e3a9a16fa944d4a

I can't really provide support for the 1.11.2 backport. I recommend using the 1.12.2 version.
I would need the crash report to identify what went wrong.

It appears to be some kind of unterminated array, unfortunately I can't find the code path specified in the error in the code. If you want to talk more about this, come to the support channel on the discord and speak to me (Roger), Ruukas or Thieme.

I'm pretty sure it has to do with the nbt preview

As it stands now, I can't provide support for the 1.11.2 version. Maybe I will do another backport in the future, in which it should be fixed.